Help-On frame Buffer

Help-On frame Buffer

[sanjay anvekar]

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Hi,

    I am new to Linux and frame buffer. I am using Intel 945GSE / ICH7M chipset 
Panel PC with integrated Intel 945GSE
display chipset. Different size and resolution LCD screens are interfaced to the 
hardware (it supports Dual Channel 24-bit LVDS).
I am using Linux VESA frame buffer for various graphic object implementation.I 
am able to get 1024x768 screen resolution using
VESA frame buffer, but I am not able to get the full screen resolution of 
1366x768 pixels supported my LCD screen.
Currenlty for various resolution I am changing boot configuration file as below
    e.g. vga=791 for 1024x768.

My existing BIOS does not list the 1366x768 resolution. So I would like to know 
how I could get the full resolution using
the exsiting  hardware.
Please help me.

Thanks & Best Regards,
Sanjay


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Re: Help-On frame Buffer

[Bruno Prémont]

Hi,

You should look at KMS (Kernel Mode Setting) with i915 driver that you
find under DRI. (CONFIG_DRM_I915 + CONFIG_DRM_I915_KMS)
KMS can also be manually enabled/disabled with i915.modeset kernel
parameter when i915 is built-in.

VESA only knows a few standard predefined modes but not the wide
resolutions currently seen. It's based on some BIOS code and can only
set resolution at early system boot, does not support s2ram (S3) nor any
acceleration.

Bruno



On Fri, 03 December 2010 sanjay anvekar <sanjayanvekar@yahoo.com> wrote:
> Hi,
> 
>     I am new to Linux and frame buffer. I am using Intel 945GSE / ICH7M chipset 
> Panel PC with integrated Intel 945GSE
> display chipset. Different size and resolution LCD screens are interfaced to the 
> hardware (it supports Dual Channel 24-bit LVDS).
> I am using Linux VESA frame buffer for various graphic object implementation.I 
> am able to get 1024x768 screen resolution using
> VESA frame buffer, but I am not able to get the full screen resolution of 
> 1366x768 pixels supported my LCD screen.
> Currenlty for various resolution I am changing boot configuration file as below
>     e.g. vga=791 for 1024x768.
> 
> My existing BIOS does not list the 1366x768 resolution. So I would like to know 
> how I could get the full resolution using
> the exsiting  hardware.
> Please help me.
> 
> Thanks & Best Regards,
> Sanjay
> 
> 

Re: Help-On frame Buffer

[Liu, Xinyun]

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If you use vga=791, that mean you will use vesa driver to set mode. 1366x768 is not a standard mode and normally will not be pre-set in the video bios. So you can not find it and use VBE standard call to set/get this mode.

Maybe you can try `modprobe intelfb mode=1366x768-32@50`.

[1] intelfb.txt in kernel source Document
[2] vesafb.txt in kernel source Document

From: intel-gfx-bounces+xinyun.liu=intel.com@lists.freedesktop.org [mailto:intel-gfx-bounces+xinyun.liu=intel.com@lists.freedesktop.org] On Behalf Of sanjay anvekar
Sent: Saturday, December 04, 2010 1:41 AM
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] Help-On frame Buffer

Hi,
    I am new to Linux and frame buffer. I am using Intel 945GSE / ICH7M chipset Panel PC with integrated Intel 945GSE
display chipset. Different size and resolution LCD screens are interfaced to the hardware (it supports Dual Channel 24-bit LVDS).
I am using Linux VESA frame buffer for various graphic object implementation.I am able to get 1024x768 screen resolution using
VESA frame buffer, but I am not able to get the full screen resolution of 1366x768 pixels supported my LCD screen.
Currenlty for various resolution I am changing boot configuration file as below
    e.g. vga=791 for 1024x768.

My existing BIOS does not list the 1366x768 resolution. So I would like to know how I could get the full resolution using
the exsiting hardware.
Please help me.

Thanks & Best Regards,
Sanjay



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http://lists.freedesktop.org/mailman/listinfo/intel-gfx

Re: Help-On frame Buffer

[sanjay anvekar]

[-- Attachment #1.1: Type: text/plain, Size: 2354 bytes --]

Hi Bruno,
    Thanks for your reply. I have recompiled the Linux kernel with 
CONFIG_DRM_I915
enabled, with the updated kernel file my display is looking strange. i.e. I have 
vga=791
option in my boot configuration file and with this actual graphics screen is 
displayed only
in quarter area of screen. Which is reapting twice, covering left and right 
quarter of screen,
rest screen is black(i.e.bottom half of the screen). 
How can I solve this problem? Please help me. 
With the latest Kernel file with CONFIG_DRM_I915 enabled, how do I set different 
screen resolutions. Please let me know.

Thanks & Best Regards,
Sanjay




________________________________
From: Bruno Prémont <bonbons@linux-vserver.org>
To: sanjay anvekar <sanjayanvekar@yahoo.com>
Cc: intel-gfx@lists.freedesktop.org
Sent: Sat, 4 December, 2010 2:12:57 AM
Subject: Re: [Intel-gfx] Help-On frame Buffer

Hi,

You should look at KMS (Kernel Mode Setting) with i915 driver that you
find under DRI. (CONFIG_DRM_I915 + CONFIG_DRM_I915_KMS)
KMS can also be manually enabled/disabled with i915.modeset kernel
parameter when i915 is built-in.

VESA only knows a few standard predefined modes but not the wide
resolutions currently seen. It's based on some BIOS code and can only
set resolution at early system boot, does not support s2ram (S3) nor any
acceleration.

Bruno



On Fri, 03 December 2010 sanjay anvekar <sanjayanvekar@yahoo.com> wrote:
> Hi,
> 
>     I am new to Linux and frame buffer. I am using Intel 945GSE / ICH7M chipset 
>
> Panel PC with integrated Intel 945GSE
> display chipset. Different size and resolution LCD screens are interfaced to 
>the 
>
> hardware (it supports Dual Channel 24-bit LVDS).
> I am using Linux VESA frame buffer for various graphic object implementation.I 

> am able to get 1024x768 screen resolution using
> VESA frame buffer, but I am not able to get the full screen resolution of 
> 1366x768 pixels supported my LCD screen.
> Currenlty for various resolution I am changing boot configuration file as 
below
>     e.g. vga=791 for 1024x768.
> 
> My existing BIOS does not list the 1366x768 resolution. So I would like to know 
>
> how I could get the full resolution using
> the exsiting  hardware.
> Please help me.
> 
> Thanks & Best Regards,
> Sanjay
> 
> 



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Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx

Re: Help-On frame Buffer

[Bruno Prémont]

Hi Sanjay,

Most useful would be the pertinent part of your kernel log
(dmesg | grep -A 10 -B 10 drm) as well as some of the content
of the following sysfs files (edid is binary):
  /sys/class/drm/card0/card0-*/{dpms,edid,enabled,modes,status}

Eventually also:
  grep /sys/module/i915/parameters/*
and
  uname -a


Bruno



On Mon, 6 Dec 2010 03:49:43 sanjay anvekar wrote:
> Hi Bruno,
>     Thanks for your reply. I have recompiled the Linux kernel with 
> CONFIG_DRM_I915
> enabled, with the updated kernel file my display is looking strange. i.e. I have 
> vga=791
> option in my boot configuration file and with this actual graphics screen is 
> displayed only
> in quarter area of screen. Which is reapting twice, covering left and right 
> quarter of screen,
> rest screen is black(i.e.bottom half of the screen). 
> How can I solve this problem? Please help me. 
> With the latest Kernel file with CONFIG_DRM_I915 enabled, how do I set different 
> screen resolutions. Please let me know.
> 
> Thanks & Best Regards,
> Sanjay
> 
> 
> 
> 
> ________________________________
> From: Bruno Prémont <bonbons@linux-vserver.org>
> To: sanjay anvekar <sanjayanvekar@yahoo.com>
> Cc: intel-gfx@lists.freedesktop.org
> Sent: Sat, 4 December, 2010 2:12:57 AM
> Subject: Re: [Intel-gfx] Help-On frame Buffer
> 
> Hi,
> 
> You should look at KMS (Kernel Mode Setting) with i915 driver that you
> find under DRI. (CONFIG_DRM_I915 + CONFIG_DRM_I915_KMS)
> KMS can also be manually enabled/disabled with i915.modeset kernel
> parameter when i915 is built-in.
> 
> VESA only knows a few standard predefined modes but not the wide
> resolutions currently seen. It's based on some BIOS code and can only
> set resolution at early system boot, does not support s2ram (S3) nor any
> acceleration.
> 
> Bruno
> 
> 
> 
> On Fri, 03 December 2010 sanjay anvekar <sanjayanvekar@yahoo.com> wrote:
> > Hi,
> > 
> >     I am new to Linux and frame buffer. I am using Intel 945GSE / ICH7M chipset 
> >
> > Panel PC with integrated Intel 945GSE
> > display chipset. Different size and resolution LCD screens are interfaced to 
> >the 
> >
> > hardware (it supports Dual Channel 24-bit LVDS).
> > I am using Linux VESA frame buffer for various graphic object implementation.I 
> 
> > am able to get 1024x768 screen resolution using
> > VESA frame buffer, but I am not able to get the full screen resolution of 
> > 1366x768 pixels supported my LCD screen.
> > Currenlty for various resolution I am changing boot configuration file as 
> below
> >     e.g. vga=791 for 1024x768.
> > 
> > My existing BIOS does not list the 1366x768 resolution. So I would like to know 
> >
> > how I could get the full resolution using
> > the exsiting  hardware.
> > Please help me.
> > 
> > Thanks & Best Regards,
> > Sanjay
> > 
> > 
> 
> 
> 
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx

Re: Help-On frame Buffer

[Bruno Prémont]

Hi Sanjay,

Note, please keep list CCed and avoid HTML e-mails.
In addition, inlining (without line wrapping) the log snippled would
have been preferred (easier to replying).

On Thu, 9 Dec 2010 07:43:18 sanjay anvekar wrote:
> Hi Bruno,
>     Thanks for your reply.
> Attached is the ouput of  ("dmesg | grep -A 10 -B 10 drm") as "drm.txt".
>
>
> [    1.836] ACPI: SSDT 3f7ce0c0 00CC (v0  PmRef  Cpu1Ist 0030 INTL 2011)
> [    1.841] ACPI: SSDT 3f7ce3d0 005 (v0  PmRef  Cpu1Cst 0030 INTL 2011)
> [    1.857] ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
> [    1.851] processor LNXCPU:0: registered as cooling_device1
> [    1.801] Non-volatile memory driver v1.3
> [    1.814] intel_rng: FWH not detected
> [    1.878] Linux agpgart interface v0.13
> [    1.846] agpgart-intel 00:0:0.0: Intel 95GME Chipset
                                            ^^^^^
This device name looks suspicious (as do all the i95 on the following lines...

What exact kernel version are you using?

> [    1.815] agpgart-intel 00:0:0.0: detected 73K stolen memory
> [    1.908] agpgart-intel 00:0:0.0: AGP aperture is 26M @ 0xd0000
> [    1.970] [drm] Initialized drm 1.1.0 2001
> [    1.932] i95 00:0:0.0: PCI INT A -> GSI 1 (level, low) -> IRQ 1
> [    1.998] i95 00:0:0.0: setting latency timer to 6
> [    2.217] i2c-adapter i2c-2: unable to read EDID block.
> [    2.239] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.319] i2c-adapter i2c-3: unable to read EDID block.
> [    2.336] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.357] i2c-adapter i2c-2: unable to read EDID block.
> [    2.381] i95 00:0:0.0: LVDS-1: no EDID data

As there does not seem to be a working EDID around, driver will have to
find LVDS display details somewhere in VBIOS blob. (which might fail,
in which case dumping VBIOS will be needed for someone the have a look
at it)

echo 1 > /sys/class/drm/card0/device/rom
cat /sys/class/drm/card0/device/rom > vbios.bin

And attach the vbios. (Well hoping you don't get the same error as
for the other sysfs files)

> [    2.362] fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver

Could you try disabling vesafb in kernel config?

> [    2.381] Console: switching to colour dummy device 8x2
> [    2.381] Console: switching to colour dummy device 8x2
> [    2.582] [drm] LVDS-8: set mode 12x78 c
> [    2.794] Console: switching to colour frame buffer device 18x4
> [    2.794] Console: switching to colour frame buffer device 18x4

Unless a specific character go eaten your console size definitely looks
damn small!

> [    2.786] [drm] fb0: inteldrmfb frame buffer device
> [    2.780] [drm] Initialized i95 1.6.0 2003 for 00:0:0.0 on minor 0
> [    2.788] Serial: 85/150 driver, 4 ports, IRQ sharing enabled
> [    3.021] serial85: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
> [    3.261] serial85: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
> [    3.501] serial85: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
> [    3.741] serial85: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
> [    3.742] 0:0: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
> [    3.752] 0:0: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
> [    3.751] 0:0: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
> [    3.762] 0:0a: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
> [    3.718] brd: module loaded
>
> Unfortunatley I could not get "sysfs" files ,it returned some error.

What error are you getting?

> Also 
> 
>    "grep /sys/module/i915/parameters/*" and  "uname -a"  returned nothing.

Weird...

> Also I am attaching my basic graphic display file where I amusing VESA frame 
> buffer.

As long as framebuffer console is not properly setup it makes no sense to look
at your program, the issue lying in i915 driver or data it can obtain from vbios.

> Please suggest me something.
> 
> Thanks & Best Regards,
> Sanjay
> 
> 
> 
> 
> ________________________________
> From: Bruno Prémont <bonbons@linux-vserver.org>
> To: sanjay anvekar <sanjayanvekar@yahoo.com>
> Cc: intel-gfx@lists.freedesktop.org
> Sent: Mon, 6 December, 2010 6:35:41 PM
> Subject: Re: [Intel-gfx] Help-On frame Buffer
> 
> Hi Sanjay,
> 
> Most useful would be the pertinent part of your kernel log
> (dmesg | grep -A 10 -B 10 drm) as well as some of the content
> of the following sysfs files (edid is binary):
>   /sys/class/drm/card0/card0-*/{dpms,edid,enabled,modes,status}
> 
> Eventually also:
>   grep /sys/module/i915/parameters/*
> and
>   uname -a
> 
> 
> Bruno
> 
> 
> 
> On Mon, 6 Dec 2010 03:49:43 sanjay anvekar wrote:
> > Hi Bruno,
> >     Thanks for your reply. I have recompiled the Linux kernel with 
> > CONFIG_DRM_I915
> > enabled, with the updated kernel file my display is looking strange. i.e. I 
> >have 
> >
> > vga=791
> > option in my boot configuration file and with this actual graphics screen is 
> > displayed only
> > in quarter area of screen. Which is reapting twice, covering left and right 
> > quarter of screen,
> > rest screen is black(i.e.bottom half of the screen). 
> > How can I solve this problem? Please help me. 
> > With the latest Kernel file with CONFIG_DRM_I915 enabled, how do I set 
> >different 
> >
> > screen resolutions. Please let me know.
> > 
> > Thanks & Best Regards,
> > Sanjay
> > 
> > 
> > 
> > 
> > ________________________________
> > From: Bruno Prémont <bonbons@linux-vserver.org>
> > To: sanjay anvekar <sanjayanvekar@yahoo.com>
> > Cc: intel-gfx@lists.freedesktop.org
> > Sent: Sat, 4 December, 2010 2:12:57 AM
> > Subject: Re: [Intel-gfx] Help-On frame Buffer
> > 
> > Hi,
> > 
> > You should look at KMS (Kernel Mode Setting) with i915 driver that you
> > find under DRI. (CONFIG_DRM_I915 + CONFIG_DRM_I915_KMS)
> > KMS can also be manually enabled/disabled with i915.modeset kernel
> > parameter when i915 is built-in.
> > 
> > VESA only knows a few standard predefined modes but not the wide
> > resolutions currently seen. It's based on some BIOS code and can only
> > set resolution at early system boot, does not support s2ram (S3) nor any
> > acceleration.
> > 
> > Bruno
> > 
> > 
> > 
> > On Fri, 03 December 2010 sanjay anvekar <sanjayanvekar@yahoo.com> wrote:
> > > Hi,
> > > 
> > >     I am new to Linux and frame buffer. I am using Intel 945GSE / ICH7M 
> >chipset 
> >
> > >
> > > Panel PC with integrated Intel 945GSE
> > > display chipset. Different size and resolution LCD screens are interfaced to 
> 
> > >the 
> > >
> > > hardware (it supports Dual Channel 24-bit LVDS).
> > > I am using Linux VESA frame buffer for various graphic object 
> >implementation.I 
> >
> > 
> > > am able to get 1024x768 screen resolution using
> > > VESA frame buffer, but I am not able to get the full screen resolution of 
> > > 1366x768 pixels supported my LCD screen.
> > > Currenlty for various resolution I am changing boot configuration file as 
> > below
> > >     e.g. vga=791 for 1024x768.
> > > 
> > > My existing BIOS does not list the 1366x768 resolution. So I would like to 
> >know 
> >
> > >
> > > how I could get the full resolution using
> > > the exsiting  hardware.
> > > Please help me.
> > > 
> > > Thanks & Best Regards,
> > > Sanjay
> > > 
> > > 
> > 
> > 
> > 
> 
> 
> 
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx

Re: Help-On frame Buffer

[sanjay anvekar]

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Hi Bruno,
      Thanks for your reply.  Answers to your questions are as follows.

Linux Kernel: uname -a info
Linux (none) 2.6.31.6 #1 SMP Tue Sep 7 16:47:45 IST 2010 i686 unknown

Output of following command is attached in vbios.bin
  echo 1 > /sys/class/drm/card0/device/rom
 cat /sys/class/drm/card0/device/rom > vbios.bin


  "Could you try disabling vesafb in kernel config?"
I tried disabling vesafb and still getting the same display.
dmesg output after disabling the vesafb is as follows.

[    1.891] ACPI: SSDT 3f7ce0c0 00CC (v0  PmRef  Cpu1Ist 0030 INTL 2011)
[    1.892] ACPI: SSDT 3f7ce3d0 005 (v0  PmRef  Cpu1Cst 0030 INTL 2011)
[    1.801] ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
[    1.814] processor LNXCPU:0: registered as cooling_device1
[    1.864] Non-volatile memory driver v1.3
[    1.863] intel_rng: FWH not detected
[    1.872] Linux agpgart interface v0.13
[    1.876] agpgart-intel 00:0:0.0: Intel 95GME Chipset
[    1.878] agpgart-intel 00:0:0.0: detected 73K stolen memory
[    1.800] agpgart-intel 00:0:0.0: AGP aperture is 26M @ 0xd0000
[    1.803] [drm] Initialized drm 1.1.0 2001
[    1.806] i95 00:0:0.0: PCI INT A -> GSI 1 (level, low) -> IRQ 1
[    1.806] i95 00:0:0.0: setting latency timer to 6
[    2.222] i2c-adapter i2c-2: unable to read EDID block.
[    2.222] i95 00:0:0.0: LVDS-1: no EDID data
[    2.290] i2c-adapter i2c-3: unable to read EDID block.
[    2.299] i95 00:0:0.0: LVDS-1: no EDID data
[    2.204] i2c-adapter i2c-2: unable to read EDID block.
[    2.203] i95 00:0:0.0: LVDS-1: no EDID data
[    1.806] i95 00:0:0.0: PCI INT A -> GSI 1 (level, low) -> IRQ 1
[    1.806] i95 00:0:0.0: setting latency timer to 6
[    2.222] i2c-adapter i2c-2: unable to read EDID block.
[    2.222] i95 00:0:0.0: LVDS-1: no EDID data
[    2.290] i2c-adapter i2c-3: unable to read EDID block.
[    2.299] i95 00:0:0.0: LVDS-1: no EDID data
[    2.204] i2c-adapter i2c-2: unable to read EDID block.
[    2.203] i95 00:0:0.0: LVDS-1: no EDID data
[    2.577] [drm] LVDS-8: set mode 12x78 c
[    2.777] Console: switching to colour frame buffer device 18x4
[    2.777] Console: switching to colour frame buffer device 18x4
[    2.769] [drm] fb0: inteldrmfb frame buffer device
[    2.762] [drm] Initialized i95 1.6.0 2003 for 00:0:0.0 on minor 0
[    2.762] Serial: 85/150 driver, 4 ports, IRQ sharing enabled
[    2.902] serial85: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
[    3.241] serial85: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
[    3.481] serial85: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
[    3.722] serial85: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
[    3.724] 0:0: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
[    3.735] 0:0: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
[    3.734] 0:0: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
[    3.744] 0:0a: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
[    3.796] brd: module loaded

When I tried with "grep /sys/module/i915/parameters/*" command system didn't 
return anything
and it was stuck there. I had to restart the system.

Please suggest me further.

Thanks & Best Regards,
Sanjay
________________________________
From: Bruno Prémont <bonbons@linux-vserver.org>
To: sanjay anvekar <sanjayanvekar@yahoo.com>
Cc: intel-gfx@lists.freedesktop.org
Sent: Fri, 10 December, 2010 1:06:05 PM
Subject: Re: [Intel-gfx] Help-On frame Buffer

Hi Sanjay,

Note, please keep list CCed and avoid HTML e-mails.
In addition, inlining (without line wrapping) the log snippled would
have been preferred (easier to replying).

On Thu, 9 Dec 2010 07:43:18 sanjay anvekar wrote:
> Hi Bruno,
>     Thanks for your reply.
> Attached is the ouput of  ("dmesg | grep -A 10 -B 10 drm") as "drm.txt".
>
>
> [    1.836] ACPI: SSDT 3f7ce0c0 00CC (v0  PmRef  Cpu1Ist 0030 INTL 2011)
> [    1.841] ACPI: SSDT 3f7ce3d0 005 (v0  PmRef  Cpu1Cst 0030 INTL 2011)
> [    1.857] ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
> [    1.851] processor LNXCPU:0: registered as cooling_device1
> [    1.801] Non-volatile memory driver v1.3
> [    1.814] intel_rng: FWH not detected
> [    1.878] Linux agpgart interface v0.13
> [    1.846] agpgart-intel 00:0:0.0: Intel 95GME Chipset
                                            ^^^^^
This device name looks suspicious (as do all the i95 on the following lines...

What exact kernel version are you using?

> [    1.815] agpgart-intel 00:0:0.0: detected 73K stolen memory
> [    1.908] agpgart-intel 00:0:0.0: AGP aperture is 26M @ 0xd0000
> [    1.970] [drm] Initialized drm 1.1.0 2001
> [    1.932] i95 00:0:0.0: PCI INT A -> GSI 1 (level, low) -> IRQ 1
> [    1.998] i95 00:0:0.0: setting latency timer to 6
> [    2.217] i2c-adapter i2c-2: unable to read EDID block.
> [    2.239] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.319] i2c-adapter i2c-3: unable to read EDID block.
> [    2.336] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.357] i2c-adapter i2c-2: unable to read EDID block.
> [    2.381] i95 00:0:0.0: LVDS-1: no EDID data

As there does not seem to be a working EDID around, driver will have to
find LVDS display details somewhere in VBIOS blob. (which might fail,
in which case dumping VBIOS will be needed for someone the have a look
at it)

echo 1 > /sys/class/drm/card0/device/rom
cat /sys/class/drm/card0/device/rom > vbios.bin

And attach the vbios. (Well hoping you don't get the same error as
for the other sysfs files)

> [    2.362] fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing 
>generic driver

Could you try disabling vesafb in kernel config?

> [    2.381] Console: switching to colour dummy device 8x2
> [    2.381] Console: switching to colour dummy device 8x2
> [    2.582] [drm] LVDS-8: set mode 12x78 c
> [    2.794] Console: switching to colour frame buffer device 18x4
> [    2.794] Console: switching to colour frame buffer device 18x4

Unless a specific character go eaten your console size definitely looks
damn small!

> [    2.786] [drm] fb0: inteldrmfb frame buffer device
> [    2.780] [drm] Initialized i95 1.6.0 2003 for 00:0:0.0 on minor 0
> [    2.788] Serial: 85/150 driver, 4 ports, IRQ sharing enabled
> [    3.021] serial85: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
> [    3.261] serial85: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
> [    3.501] serial85: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
> [    3.741] serial85: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
> [    3.742] 0:0: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
> [    3.752] 0:0: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
> [    3.751] 0:0: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
> [    3.762] 0:0a: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
> [    3.718] brd: module loaded
>
> Unfortunatley I could not get "sysfs" files ,it returned some error.

What error are you getting?

> Also 
> 
>    "grep /sys/module/i915/parameters/*" and  "uname -a"  returned nothing.

Weird...

> Also I am attaching my basic graphic display file where I amusing VESA frame 
> buffer.

As long as framebuffer console is not properly setup it makes no sense to look
at your program, the issue lying in i915 driver or data it can obtain from 
vbios.

> Please suggest me something.
> 
> Thanks & Best Regards,
> Sanjay
> 
> 
> 
> 
> ________________________________
> From: Bruno Prémont <bonbons@linux-vserver.org>
> To: sanjay anvekar <sanjayanvekar@yahoo.com>
> Cc: intel-gfx@lists.freedesktop.org
> Sent: Mon, 6 December, 2010 6:35:41 PM
> Subject: Re: [Intel-gfx] Help-On frame Buffer
> 
> Hi Sanjay,
> 
> Most useful would be the pertinent part of your kernel log
> (dmesg | grep -A 10 -B 10 drm) as well as some of the content
> of the following sysfs files (edid is binary):
>   /sys/class/drm/card0/card0-*/{dpms,edid,enabled,modes,status}
> 
> Eventually also:
>   grep /sys/module/i915/parameters/*
> and
>   uname -a
> 
> 
> Bruno
> 
> 
> 
> On Mon, 6 Dec 2010 03:49:43 sanjay anvekar wrote:
> > Hi Bruno,
> >     Thanks for your reply. I have recompiled the Linux kernel with 
> > CONFIG_DRM_I915
> > enabled, with the updated kernel file my display is looking strange. i.e. I 
> >have 
> >
> > vga=791
> > option in my boot configuration file and with this actual graphics screen is 


> > displayed only
> > in quarter area of screen. Which is reapting twice, covering left and right 
> > quarter of screen,
> > rest screen is black(i.e.bottom half of the screen). 
> > How can I solve this problem? Please help me. 
> > With the latest Kernel file with CONFIG_DRM_I915 enabled, how do I set 
> >different 
> >
> > screen resolutions. Please let me know.
> > 
> > Thanks & Best Regards,
> > Sanjay
> > 
> > 
> > 
> > 
> > ________________________________
> > From: Bruno Prémont <bonbons@linux-vserver.org>
> > To: sanjay anvekar <sanjayanvekar@yahoo.com>
> > Cc: intel-gfx@lists.freedesktop.org
> > Sent: Sat, 4 December, 2010 2:12:57 AM
> > Subject: Re: [Intel-gfx] Help-On frame Buffer
> > 
> > Hi,
> > 
> > You should look at KMS (Kernel Mode Setting) with i915 driver that you
> > find under DRI. (CONFIG_DRM_I915 + CONFIG_DRM_I915_KMS)
> > KMS can also be manually enabled/disabled with i915.modeset kernel
> > parameter when i915 is built-in.
> > 
> > VESA only knows a few standard predefined modes but not the wide
> > resolutions currently seen. It's based on some BIOS code and can only
> > set resolution at early system boot, does not support s2ram (S3) nor any
> > acceleration.
> > 
> > Bruno
> > 
> > 
> > 
> > On Fri, 03 December 2010 sanjay anvekar <sanjayanvekar@yahoo.com> wrote:
> > > Hi,
> > > 
> > >     I am new to Linux and frame buffer. I am using Intel 945GSE / ICH7M 
> >chipset 
> >
> > >
> > > Panel PC with integrated Intel 945GSE
> > > display chipset. Different size and resolution LCD screens are interfaced 
>to 
>
> 
> > >the 
> > >
> > > hardware (it supports Dual Channel 24-bit LVDS).
> > > I am using Linux VESA frame buffer for various graphic object 
> >implementation.I 
> >
> > 
> > > am able to get 1024x768 screen resolution using
> > > VESA frame buffer, but I am not able to get the full screen resolution of 
> > > 1366x768 pixels supported my LCD screen.
> > > Currenlty for various resolution I am changing boot configuration file as 
> > below
> > >     e.g. vga=791 for 1024x768.
> > > 
> > > My existing BIOS does not list the 1366x768 resolution. So I would like to 


> >know 
> >
> > >
> > > how I could get the full resolution using
> > > the exsiting  hardware.
> > > Please help me.
> > > 
> > > Thanks & Best Regards,
> > > Sanjay
> > > 
> > > 
> > 
> > 
> > 
> 
> 
> 



[-- Attachment #2: vbios.bin --]
[-- Type: application/octet-stream, Size: 65536 bytes --]

[-- Attachment #3: Type: text/plain, Size: 159 bytes --]

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Re: Help-On frame Buffer

[Bruno Prémont]

Hi Sanjay,

On Mon, 13 December 2010 sanjay anvekar wrote:
> Linux Kernel: uname -a info
> Linux (none) 2.6.31.6 #1 SMP Tue Sep 7 16:47:45 IST 2010 i686 unknown

That's an oldish kernel (and probably quite buggy KMS related)!
Are you seeing issues with more recent ones preventing their use?
Otherwise it definitely is worth trying something recent like 2.6.36.x
or maybe even latest 2.6.37-rc if 2.6.36.x didn't help.

> Output of following command is attached in vbios.bin
>   echo 1 > /sys/class/drm/card0/device/rom
>  cat /sys/class/drm/card0/device/rom > vbios.bin
> 
> 
>   "Could you try disabling vesafb in kernel config?"
> I tried disabling vesafb and still getting the same display.
> dmesg output after disabling the vesafb is as follows.
> 
> [    1.891] ACPI: SSDT 3f7ce0c0 00CC (v0  PmRef  Cpu1Ist 0030 INTL 2011)
> [    1.892] ACPI: SSDT 3f7ce3d0 005 (v0  PmRef  Cpu1Cst 0030 INTL 2011)
> [    1.801] ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
> [    1.814] processor LNXCPU:0: registered as cooling_device1
> [    1.864] Non-volatile memory driver v1.3
> [    1.863] intel_rng: FWH not detected
> [    1.872] Linux agpgart interface v0.13
> [    1.876] agpgart-intel 00:0:0.0: Intel 95GME Chipset
> [    1.878] agpgart-intel 00:0:0.0: detected 73K stolen memory
> [    1.800] agpgart-intel 00:0:0.0: AGP aperture is 26M @ 0xd0000
> [    1.803] [drm] Initialized drm 1.1.0 2001
> [    1.806] i95 00:0:0.0: PCI INT A -> GSI 1 (level, low) -> IRQ 1
> [    1.806] i95 00:0:0.0: setting latency timer to 6
> [    2.222] i2c-adapter i2c-2: unable to read EDID block.
> [    2.222] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.290] i2c-adapter i2c-3: unable to read EDID block.
> [    2.299] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.204] i2c-adapter i2c-2: unable to read EDID block.
> [    2.203] i95 00:0:0.0: LVDS-1: no EDID data
> [    1.806] i95 00:0:0.0: PCI INT A -> GSI 1 (level, low) -> IRQ 1
> [    1.806] i95 00:0:0.0: setting latency timer to 6
> [    2.222] i2c-adapter i2c-2: unable to read EDID block.
> [    2.222] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.290] i2c-adapter i2c-3: unable to read EDID block.
> [    2.299] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.204] i2c-adapter i2c-2: unable to read EDID block.
> [    2.203] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.577] [drm] LVDS-8: set mode 12x78 c
> [    2.777] Console: switching to colour frame buffer device 18x4
> [    2.777] Console: switching to colour frame buffer device 18x4
> [    2.769] [drm] fb0: inteldrmfb frame buffer device
> [    2.762] [drm] Initialized i95 1.6.0 2003 for 00:0:0.0 on minor 0
> [    2.762] Serial: 85/150 driver, 4 ports, IRQ sharing enabled
> [    2.902] serial85: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
> [    3.241] serial85: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
> [    3.481] serial85: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
> [    3.722] serial85: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
> [    3.724] 0:0: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
> [    3.735] 0:0: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
> [    3.734] 0:0: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
> [    3.744] 0:0a: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
> [    3.796] brd: module loaded

Chris, do you remember some odd-looking output like:
  'i95 00:0:0.0'
or
  'Intel 95GME Chipset'
in the above kernel log?

In addition the PCI slot looks a bit too much 00:0:0.0.

> When I tried with "grep /sys/module/i915/parameters/*" command system didn't 
> return anything and it was stuck there. I had to restart the system.

A litte '.' is missing in the grep command (my bad), thus if there were
less than 2 matches for the glob grep would be waiting for input.

grep command should have been:
  grep . /sys/module/i915/parameters/*

> Please suggest me further.
> 
> Thanks & Best Regards,
> Sanjay
> ________________________________
> From: Bruno Prémont <bonbons@linux-vserver.org>
> To: sanjay anvekar <sanjayanvekar@yahoo.com>
> Cc: intel-gfx@lists.freedesktop.org
> Sent: Fri, 10 December, 2010 1:06:05 PM
> Subject: Re: [Intel-gfx] Help-On frame Buffer
> 
> Hi Sanjay,
> 
> Note, please keep list CCed and avoid HTML e-mails.
> In addition, inlining (without line wrapping) the log snippled would
> have been preferred (easier to replying).
> 
> On Thu, 9 Dec 2010 07:43:18 sanjay anvekar wrote:
> > Hi Bruno,
> >     Thanks for your reply.
> > Attached is the ouput of  ("dmesg | grep -A 10 -B 10 drm") as "drm.txt".
> >
> >
> > [    1.836] ACPI: SSDT 3f7ce0c0 00CC (v0  PmRef  Cpu1Ist 0030 INTL 2011)
> > [    1.841] ACPI: SSDT 3f7ce3d0 005 (v0  PmRef  Cpu1Cst 0030 INTL 2011)
> > [    1.857] ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
> > [    1.851] processor LNXCPU:0: registered as cooling_device1
> > [    1.801] Non-volatile memory driver v1.3
> > [    1.814] intel_rng: FWH not detected
> > [    1.878] Linux agpgart interface v0.13
> > [    1.846] agpgart-intel 00:0:0.0: Intel 95GME Chipset
>                                             ^^^^^
> This device name looks suspicious (as do all the i95 on the following lines...
> 
> What exact kernel version are you using?
> 
> > [    1.815] agpgart-intel 00:0:0.0: detected 73K stolen memory
> > [    1.908] agpgart-intel 00:0:0.0: AGP aperture is 26M @ 0xd0000
> > [    1.970] [drm] Initialized drm 1.1.0 2001
> > [    1.932] i95 00:0:0.0: PCI INT A -> GSI 1 (level, low) -> IRQ 1
> > [    1.998] i95 00:0:0.0: setting latency timer to 6
> > [    2.217] i2c-adapter i2c-2: unable to read EDID block.
> > [    2.239] i95 00:0:0.0: LVDS-1: no EDID data
> > [    2.319] i2c-adapter i2c-3: unable to read EDID block.
> > [    2.336] i95 00:0:0.0: LVDS-1: no EDID data
> > [    2.357] i2c-adapter i2c-2: unable to read EDID block.
> > [    2.381] i95 00:0:0.0: LVDS-1: no EDID data
> 
> As there does not seem to be a working EDID around, driver will have to
> find LVDS display details somewhere in VBIOS blob. (which might fail,
> in which case dumping VBIOS will be needed for someone the have a look
> at it)
> 
> echo 1 > /sys/class/drm/card0/device/rom
> cat /sys/class/drm/card0/device/rom > vbios.bin
> 
> And attach the vbios. (Well hoping you don't get the same error as
> for the other sysfs files)
> 
> > [    2.362] fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing 
> >generic driver
> 
> Could you try disabling vesafb in kernel config?
> 
> > [    2.381] Console: switching to colour dummy device 8x2
> > [    2.381] Console: switching to colour dummy device 8x2
> > [    2.582] [drm] LVDS-8: set mode 12x78 c
> > [    2.794] Console: switching to colour frame buffer device 18x4
> > [    2.794] Console: switching to colour frame buffer device 18x4
> 
> Unless a specific character go eaten your console size definitely looks
> damn small!
> 
> > [    2.786] [drm] fb0: inteldrmfb frame buffer device
> > [    2.780] [drm] Initialized i95 1.6.0 2003 for 00:0:0.0 on minor 0
> > [    2.788] Serial: 85/150 driver, 4 ports, IRQ sharing enabled
> > [    3.021] serial85: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
> > [    3.261] serial85: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
> > [    3.501] serial85: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
> > [    3.741] serial85: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
> > [    3.742] 0:0: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
> > [    3.752] 0:0: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
> > [    3.751] 0:0: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
> > [    3.762] 0:0a: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
> > [    3.718] brd: module loaded
> >
> > Unfortunatley I could not get "sysfs" files ,it returned some error.
> 
> What error are you getting?
> 
> > Also 
> > 
> >    "grep /sys/module/i915/parameters/*" and  "uname -a"  returned nothing.
> 
> Weird...
> 
> > Also I am attaching my basic graphic display file where I amusing VESA frame 
> > buffer.
> 
> As long as framebuffer console is not properly setup it makes no sense to look
> at your program, the issue lying in i915 driver or data it can obtain from 
> vbios.
> 
> > Please suggest me something.
> > 
> > Thanks & Best Regards,
> > Sanjay
> > 
> > 
> > 
> > 
> > ________________________________
> > From: Bruno Prémont <bonbons@linux-vserver.org>
> > To: sanjay anvekar <sanjayanvekar@yahoo.com>
> > Cc: intel-gfx@lists.freedesktop.org
> > Sent: Mon, 6 December, 2010 6:35:41 PM
> > Subject: Re: [Intel-gfx] Help-On frame Buffer
> > 
> > Hi Sanjay,
> > 
> > Most useful would be the pertinent part of your kernel log
> > (dmesg | grep -A 10 -B 10 drm) as well as some of the content
> > of the following sysfs files (edid is binary):
> >   /sys/class/drm/card0/card0-*/{dpms,edid,enabled,modes,status}
> > 
> > Eventually also:
> >   grep /sys/module/i915/parameters/*
> > and
> >   uname -a
> > 
> > 
> > Bruno
> > 
> > 
> > 
> > On Mon, 6 Dec 2010 03:49:43 sanjay anvekar wrote:
> > > Hi Bruno,
> > >     Thanks for your reply. I have recompiled the Linux kernel with 
> > > CONFIG_DRM_I915
> > > enabled, with the updated kernel file my display is looking strange. i.e. I 
> > >have 
> > >
> > > vga=791
> > > option in my boot configuration file and with this actual graphics screen is 
> 
> 
> > > displayed only
> > > in quarter area of screen. Which is reapting twice, covering left and right 
> > > quarter of screen,
> > > rest screen is black(i.e.bottom half of the screen). 
> > > How can I solve this problem? Please help me. 
> > > With the latest Kernel file with CONFIG_DRM_I915 enabled, how do I set 
> > >different 
> > >
> > > screen resolutions. Please let me know.
> > > 
> > > Thanks & Best Regards,
> > > Sanjay
> > > 
> > > 
> > > 
> > > 
> > > ________________________________
> > > From: Bruno Prémont <bonbons@linux-vserver.org>
> > > To: sanjay anvekar <sanjayanvekar@yahoo.com>
> > > Cc: intel-gfx@lists.freedesktop.org
> > > Sent: Sat, 4 December, 2010 2:12:57 AM
> > > Subject: Re: [Intel-gfx] Help-On frame Buffer
> > > 
> > > Hi,
> > > 
> > > You should look at KMS (Kernel Mode Setting) with i915 driver that you
> > > find under DRI. (CONFIG_DRM_I915 + CONFIG_DRM_I915_KMS)
> > > KMS can also be manually enabled/disabled with i915.modeset kernel
> > > parameter when i915 is built-in.
> > > 
> > > VESA only knows a few standard predefined modes but not the wide
> > > resolutions currently seen. It's based on some BIOS code and can only
> > > set resolution at early system boot, does not support s2ram (S3) nor any
> > > acceleration.
> > > 
> > > Bruno
> > > 
> > > 
> > > 
> > > On Fri, 03 December 2010 sanjay anvekar <sanjayanvekar@yahoo.com> wrote:
> > > > Hi,
> > > > 
> > > >     I am new to Linux and frame buffer. I am using Intel 945GSE / ICH7M 
> > > > chipset Panel PC with integrated Intel 945GSE
> > > > display chipset. Different size and resolution LCD screens are interfaced 
> > > > to the hardware (it supports Dual Channel 24-bit LVDS).
> > > > I am using Linux VESA frame buffer for various graphic object 
> > > > implementation.I am able to get 1024x768 screen resolution using
> > > > VESA frame buffer, but I am not able to get the full screen resolution of 
> > > > 1366x768 pixels supported my LCD screen.
> > > > Currenlty for various resolution I am changing boot configuration file as 
> > > > below
> > > >     e.g. vga=791 for 1024x768.
> > > > 
> > > > My existing BIOS does not list the 1366x768 resolution. So I would like to 
> > > > know how I could get the full resolution using the exsiting  hardware.
> > > > Please help me.
> > > > 
> > > > Thanks & Best Regards,
> > > > Sanjay
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Re: Help-On frame Buffer

[Chris Wilson]

[-- Attachment #1: Type: text/plain, Size: 549 bytes --]

On Mon, 13 Dec 2010 13:10:19 +0100, Bruno Prémont <bonbons@linux-vserver.org> wrote:
> Chris, do you remember some odd-looking output like:
>   'i95 00:0:0.0'
> or
>   'Intel 95GME Chipset'
> in the above kernel log?

I'm kindly attributing that to wrangling by the mail client. A 945GME
should just work, and despite the bizarre log there's no indication of
what actually failed. Update to a current kernel, and then an
intel_reg_dumper may be of interest if it is continuing to fail.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

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Re: Help-On frame Buffer

[sanjay anvekar]

[-- Attachment #1: Type: text/plain, Size: 14952 bytes --]

Hi Bruno and All,
    Thanks for your reply. I tried today with Kernel "linux-2.6.37-rc5" and 
still I am facing the same problem.
I think I am doing something wrong please help me.

Informations are as follows:
Output of: uname -a info
Linux (none) 2.6.37-rc5 #0 SMP Tue Dec 14 11:55:56 IST 2010 i686 unknown

Output of : grep . /sys/module/i915/parameters/*
/sys/module/i915/parameters/fbpercrtc:0
/sys/module/i915/parameters/lvds_downclock:0
/sys/module/i915/parameters/modeset:1
/sys/module/i915/parameters/powersave:1

Output of:dmesg | grep -A 10 -B 10 drm
[    1.910] Monitor-Mwait will be used to enter C-3 state
[    1.911] Marking TSC unstable due to TSC halts in idle
[    1.918] Switching to clocksource hpet
[    1.989] Non-volatile memory driver v1.3
[    1.980] intel_rng: FWH not detected
[    1.989] Linux agpgart interface v0.13
[    1.993] agpgart-intel 00:0:0.0: Intel 95GME Chipset
[    1.993] agpgart-intel 00:0:0.0: detected gtt size: 224K total, 224K mappable
[    1.994] agpgart-intel 00:0:0.0: detected 89K stolen memory
[    2.039] agpgart-intel 00:0:0.0: AGP aperture is 26M @ 0xd0000
[    2.046] [drm] Initialized drm 1.1.0 2001
[    2.045] i95 00:0:0.0: PCI INT A -> GSI 1 (level, low) -> IRQ 1
[    2.040] i95 00:0:0.0: setting latency timer to 6
[    2.178] vgaarb: device changed decodes: 
PCI:00:0:0.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[    2.045] i95 00:0:0.0: PCI INT A -> GSI 1 (level, low) -> IRQ 1
[    2.040] i95 00:0:0.0: setting latency timer to 6
[    2.178] vgaarb: device changed decodes: 
PCI:00:0:0.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[    2.183] [drm] initialized overlay support
[    2.467] Console: switching to colour frame buffer device 18x4
[    2.467] Console: switching to colour frame buffer device 18x4
[    2.457] fb0: inteldrmfb frame buffer device
[    2.456] drm: registered panic notifier
[    2.467] [drm] Initialized i95 1.6.0 2003 for 00:0:0.0 on minor 0
[    2.468] Serial: 85/150 driver, 4 ports, IRQ sharing enabled
[    2.717] serial85: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
[    2.916] serial85: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
[    3.215] serial85: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
[    3.516] serial85: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
[    3.583] 0:0: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
[    3.640] 0:0: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
[    3.601] 0:0: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
[    3.669] 0:0a: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
[    3.783] brd: module loaded

Output of:
echo 1 > /sys/class/drm/card0/device/rom
cat /sys/class/drm/card0/device/rom > vbios.bin
is attached in file "vbios.bin" file.

My System Config. are as below.
Processor: Intel Atom N270
Chipset: Integrated Intel 945GSE + ICH7M
Graphics: Intel GMA950.
LVDS: Intel 82945GSE built in Single or dual channel support up to 1600x1200.

Thanks & Best Regards,
Sanjay

From: Bruno Prémont <bonbons@linux-vserver.org>
To: sanjay anvekar <sanjayanvekar@yahoo.com>
Cc: intel-gfx@lists.freedesktop.org
Sent: Mon, 13 December, 2010 5:40:19 PM
Subject: Re: [Intel-gfx] Help-On frame Buffer

Hi Sanjay,

On Mon, 13 December 2010 sanjay anvekar wrote:
> Linux Kernel: uname -a info
> Linux (none) 2.6.31.6 #1 SMP Tue Sep 7 16:47:45 IST 2010 i686 unknown

That's an oldish kernel (and probably quite buggy KMS related)!
Are you seeing issues with more recent ones preventing their use?
Otherwise it definitely is worth trying something recent like 2.6.36.x
or maybe even latest 2.6.37-rc if 2.6.36.x didn't help.

> Output of following command is attached in vbios.bin
>   echo 1 > /sys/class/drm/card0/device/rom
>  cat /sys/class/drm/card0/device/rom > vbios.bin
> 
> 
>   "Could you try disabling vesafb in kernel config?"
> I tried disabling vesafb and still getting the same display.
> dmesg output after disabling the vesafb is as follows.
> 
> [    1.891] ACPI: SSDT 3f7ce0c0 00CC (v0  PmRef  Cpu1Ist 0030 INTL 2011)
> [    1.892] ACPI: SSDT 3f7ce3d0 005 (v0  PmRef  Cpu1Cst 0030 INTL 2011)
> [    1.801] ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
> [    1.814] processor LNXCPU:0: registered as cooling_device1
> [    1.864] Non-volatile memory driver v1.3
> [    1.863] intel_rng: FWH not detected
> [    1.872] Linux agpgart interface v0.13
> [    1.876] agpgart-intel 00:0:0.0: Intel 95GME Chipset
> [    1.878] agpgart-intel 00:0:0.0: detected 73K stolen memory
> [    1.800] agpgart-intel 00:0:0.0: AGP aperture is 26M @ 0xd0000
> [    1.803] [drm] Initialized drm 1.1.0 2001
> [    1.806] i95 00:0:0.0: PCI INT A -> GSI 1 (level, low) -> IRQ 1
> [    1.806] i95 00:0:0.0: setting latency timer to 6
> [    2.222] i2c-adapter i2c-2: unable to read EDID block.
> [    2.222] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.290] i2c-adapter i2c-3: unable to read EDID block.
> [    2.299] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.204] i2c-adapter i2c-2: unable to read EDID block.
> [    2.203] i95 00:0:0.0: LVDS-1: no EDID data
> [    1.806] i95 00:0:0.0: PCI INT A -> GSI 1 (level, low) -> IRQ 1
> [    1.806] i95 00:0:0.0: setting latency timer to 6
> [    2.222] i2c-adapter i2c-2: unable to read EDID block.
> [    2.222] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.290] i2c-adapter i2c-3: unable to read EDID block.
> [    2.299] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.204] i2c-adapter i2c-2: unable to read EDID block.
> [    2.203] i95 00:0:0.0: LVDS-1: no EDID data
> [    2.577] [drm] LVDS-8: set mode 12x78 c
> [    2.777] Console: switching to colour frame buffer device 18x4
> [    2.777] Console: switching to colour frame buffer device 18x4
> [    2.769] [drm] fb0: inteldrmfb frame buffer device
> [    2.762] [drm] Initialized i95 1.6.0 2003 for 00:0:0.0 on minor 0
> [    2.762] Serial: 85/150 driver, 4 ports, IRQ sharing enabled
> [    2.902] serial85: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
> [    3.241] serial85: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
> [    3.481] serial85: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
> [    3.722] serial85: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
> [    3.724] 0:0: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
> [    3.735] 0:0: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
> [    3.734] 0:0: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
> [    3.744] 0:0a: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
> [    3.796] brd: module loaded

Chris, do you remember some odd-looking output like:
  'i95 00:0:0.0'
or
  'Intel 95GME Chipset'
in the above kernel log?

In addition the PCI slot looks a bit too much 00:0:0.0.

> When I tried with "grep /sys/module/i915/parameters/*" command system didn't 
> return anything and it was stuck there. I had to restart the system.

A litte '.' is missing in the grep command (my bad), thus if there were
less than 2 matches for the glob grep would be waiting for input.

grep command should have been:
  grep . /sys/module/i915/parameters/*

> Please suggest me further.
> 
> Thanks & Best Regards,
> Sanjay
> ________________________________
> From: Bruno Prémont <bonbons@linux-vserver.org>
> To: sanjay anvekar <sanjayanvekar@yahoo.com>
> Cc: intel-gfx@lists.freedesktop.org
> Sent: Fri, 10 December, 2010 1:06:05 PM
> Subject: Re: [Intel-gfx] Help-On frame Buffer
> 
> Hi Sanjay,
> 
> Note, please keep list CCed and avoid HTML e-mails.
> In addition, inlining (without line wrapping) the log snippled would
> have been preferred (easier to replying).
> 
> On Thu, 9 Dec 2010 07:43:18 sanjay anvekar wrote:
> > Hi Bruno,
> >     Thanks for your reply.
> > Attached is the ouput of  ("dmesg | grep -A 10 -B 10 drm") as "drm.txt".
> >
> >
> > [    1.836] ACPI: SSDT 3f7ce0c0 00CC (v0  PmRef  Cpu1Ist 0030 INTL 2011)
> > [    1.841] ACPI: SSDT 3f7ce3d0 005 (v0  PmRef  Cpu1Cst 0030 INTL 2011)
> > [    1.857] ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
> > [    1.851] processor LNXCPU:0: registered as cooling_device1
> > [    1.801] Non-volatile memory driver v1.3
> > [    1.814] intel_rng: FWH not detected
> > [    1.878] Linux agpgart interface v0.13
> > [    1.846] agpgart-intel 00:0:0.0: Intel 95GME Chipset
>                                             ^^^^^
> This device name looks suspicious (as do all the i95 on the following lines...
> 
> What exact kernel version are you using?
> 
> > [    1.815] agpgart-intel 00:0:0.0: detected 73K stolen memory
> > [    1.908] agpgart-intel 00:0:0.0: AGP aperture is 26M @ 0xd0000
> > [    1.970] [drm] Initialized drm 1.1.0 2001
> > [    1.932] i95 00:0:0.0: PCI INT A -> GSI 1 (level, low) -> IRQ 1
> > [    1.998] i95 00:0:0.0: setting latency timer to 6
> > [    2.217] i2c-adapter i2c-2: unable to read EDID block.
> > [    2.239] i95 00:0:0.0: LVDS-1: no EDID data
> > [    2.319] i2c-adapter i2c-3: unable to read EDID block.
> > [    2.336] i95 00:0:0.0: LVDS-1: no EDID data
> > [    2.357] i2c-adapter i2c-2: unable to read EDID block.
> > [    2.381] i95 00:0:0.0: LVDS-1: no EDID data
> 
> As there does not seem to be a working EDID around, driver will have to
> find LVDS display details somewhere in VBIOS blob. (which might fail,
> in which case dumping VBIOS will be needed for someone the have a look
> at it)
> 
> echo 1 > /sys/class/drm/card0/device/rom
> cat /sys/class/drm/card0/device/rom > vbios.bin
> 
> And attach the vbios. (Well hoping you don't get the same error as
> for the other sysfs files)
> 
> > [    2.362] fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing 
> >generic driver
> 
> Could you try disabling vesafb in kernel config?
> 
> > [    2.381] Console: switching to colour dummy device 8x2
> > [    2.381] Console: switching to colour dummy device 8x2
> > [    2.582] [drm] LVDS-8: set mode 12x78 c
> > [    2.794] Console: switching to colour frame buffer device 18x4
> > [    2.794] Console: switching to colour frame buffer device 18x4
> 
> Unless a specific character go eaten your console size definitely looks
> damn small!
> 
> > [    2.786] [drm] fb0: inteldrmfb frame buffer device
> > [    2.780] [drm] Initialized i95 1.6.0 2003 for 00:0:0.0 on minor 0
> > [    2.788] Serial: 85/150 driver, 4 ports, IRQ sharing enabled
> > [    3.021] serial85: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
> > [    3.261] serial85: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
> > [    3.501] serial85: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
> > [    3.741] serial85: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
> > [    3.742] 0:0: ttyS0 at I/O 0x3f8 (irq = 4) is a 150A
> > [    3.752] 0:0: ttyS1 at I/O 0x2f8 (irq = 3) is a 150A
> > [    3.751] 0:0: ttyS2 at I/O 0x3e8 (irq = 1) is a 150A
> > [    3.762] 0:0a: ttyS3 at I/O 0x2e8 (irq = 1) is a 150A
> > [    3.718] brd: module loaded
> >
> > Unfortunatley I could not get "sysfs" files ,it returned some error.
> 
> What error are you getting?
> 
> > Also 
> > 
> >    "grep /sys/module/i915/parameters/*" and  "uname -a"  returned nothing.
> 
> Weird...
> 
> > Also I am attaching my basic graphic display file where I amusing VESA frame 

> > buffer.
> 
> As long as framebuffer console is not properly setup it makes no sense to look
> at your program, the issue lying in i915 driver or data it can obtain from 
> vbios.
> 
> > Please suggest me something.
> > 
> > Thanks & Best Regards,
> > Sanjay
> > 
> > 
> > 
> > 
> > ________________________________
> > From: Bruno Prémont <bonbons@linux-vserver.org>
> > To: sanjay anvekar <sanjayanvekar@yahoo.com>
> > Cc: intel-gfx@lists.freedesktop.org
> > Sent: Mon, 6 December, 2010 6:35:41 PM
> > Subject: Re: [Intel-gfx] Help-On frame Buffer
> > 
> > Hi Sanjay,
> > 
> > Most useful would be the pertinent part of your kernel log
> > (dmesg | grep -A 10 -B 10 drm) as well as some of the content
> > of the following sysfs files (edid is binary):
> >   /sys/class/drm/card0/card0-*/{dpms,edid,enabled,modes,status}
> > 
> > Eventually also:
> >   grep /sys/module/i915/parameters/*
> > and
> >   uname -a
> > 
> > 
> > Bruno
> > 
> > 
> > 
> > On Mon, 6 Dec 2010 03:49:43 sanjay anvekar wrote:
> > > Hi Bruno,
> > >     Thanks for your reply. I have recompiled the Linux kernel with 
> > > CONFIG_DRM_I915
> > > enabled, with the updated kernel file my display is looking strange. i.e. I 
>
> > >have 
> > >
> > > vga=791
> > > option in my boot configuration file and with this actual graphics screen 
>is 
>
> 
> 
> > > displayed only
> > > in quarter area of screen. Which is reapting twice, covering left and right 
>
> > > quarter of screen,
> > > rest screen is black(i.e.bottom half of the screen). 
> > > How can I solve this problem? Please help me. 
> > > With the latest Kernel file with CONFIG_DRM_I915 enabled, how do I set 
> > >different 
> > >
> > > screen resolutions. Please let me know.
> > > 
> > > Thanks & Best Regards,
> > > Sanjay
> > > 
> > > 
> > > 
> > > 
> > > ________________________________
> > > From: Bruno Prémont <bonbons@linux-vserver.org>
> > > To: sanjay anvekar <sanjayanvekar@yahoo.com>
> > > Cc: intel-gfx@lists.freedesktop.org
> > > Sent: Sat, 4 December, 2010 2:12:57 AM
> > > Subject: Re: [Intel-gfx] Help-On frame Buffer
> > > 
> > > Hi,
> > > 
> > > You should look at KMS (Kernel Mode Setting) with i915 driver that you
> > > find under DRI. (CONFIG_DRM_I915 + CONFIG_DRM_I915_KMS)
> > > KMS can also be manually enabled/disabled with i915.modeset kernel
> > > parameter when i915 is built-in.
> > > 
> > > VESA only knows a few standard predefined modes but not the wide
> > > resolutions currently seen. It's based on some BIOS code and can only
> > > set resolution at early system boot, does not support s2ram (S3) nor any
> > > acceleration.
> > > 
> > > Bruno
> > > 
> > > 
> > > 
> > > On Fri, 03 December 2010 sanjay anvekar <sanjayanvekar@yahoo.com> wrote:
> > > > Hi,
> > > > 
> > > >     I am new to Linux and frame buffer. I am using Intel 945GSE / ICH7M 
> > > > chipset Panel PC with integrated Intel 945GSE
> > > > display chipset. Different size and resolution LCD screens are interfaced 
>
> > > > to the hardware (it supports Dual Channel 24-bit LVDS).
> > > > I am using Linux VESA frame buffer for various graphic object 
> > > > implementation.I am able to get 1024x768 screen resolution using
> > > > VESA frame buffer, but I am not able to get the full screen resolution of 
>
> > > > 1366x768 pixels supported my LCD screen.
> > > > Currenlty for various resolution I am changing boot configuration file as 
>
> > > > below
> > > >     e.g. vga=791 for 1024x768.
> > > > 
> > > > My existing BIOS does not list the 1366x768 resolution. So I would like 
>to 
>
> > > > know how I could get the full resolution using the exsiting  hardware.
> > > > Please help me.
> > > > 
> > > > Thanks & Best Regards,
> > > > Sanjay



[-- Attachment #2: vbios.bin --]
[-- Type: application/mac-binary, Size: 65536 bytes --]

[-- Attachment #3: Type: text/plain, Size: 159 bytes --]

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KMS in GMA500 ?

[sanjay anvekar]

Hello,
     I have Intel GMA500 board with integrated graphics.Display of 800x480 
resolution is interfaced to
the board.I would like to enable Kernel Mode Setting to achieve this resolution. 

So please can anybody let me know which Linux Kernel option need to be selected 
in order to achieve 

this.
I am using Kernel 2.6.36.2.

Thanks & Best Regards,
Sanjay

Re: KMS in GMA500 ?

[Clemens Eisserer]

Hi,

There is some limited kms mode-setting support in linux-2.6.38,
however only mode setting and now acceleration or whatever.
Unfourtunatlly there are only closed-source drivers for your GPU,
precompiled for some selected distributions.

- Clemens

2011/1/12 sanjay anvekar <sanjayanvekar@yahoo.com>:
> Hello,
>     I have Intel GMA500 board with integrated graphics.Display of 800x480
> resolution is interfaced to
> the board.I would like to enable Kernel Mode Setting to achieve this resolution.
>
> So please can anybody let me know which Linux Kernel option need to be selected
> in order to achieve
>
> this.
> I am using Kernel 2.6.36.2.
>
> Thanks & Best Regards,
> Sanjay
>
>
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
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