intelfb broken ?

intelfb broken ?

[janik holy]

Hello, i have hp compaq nx9020 with Display controller: Intel Corp. 82852/855GM Integrated Graphics Device (rev 02), im trying run console with framebuffer -> intelfb, in kernel 2.6.11, and vga=792, all work ok, just cursor is not visible. In all kernel > 2.6.11, vga=792, my laptop just booting, all should work, but display is all the time blank, nothing is seen.

this is log from 2.6.11, where all work but cursor is not visible, in lilo vga=792, because append=intelfb... is impossible to use if laptop...

intelfb: 00:02.0: Intel(R) 852GM, aperture size 128MB, stolen memory 32636kB
intelfb: MTRR is disabled in the kernel
intelfb: Non-CRT device is enabled ( LVDS port ).  Disabling mode switching.
intelfb: Initial video mode is 1024x768-32@60.
intelfb: Changing the video mode is not supported.
Console: switching to colour frame buffer device 128x48

with > 2.6.11, actually 2.6.13.2 laptop boot, but on display is nothing, just black .. better blank display i try to look at dmesg (by blind)
intelfb: Framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G chipset
s
intelfb: Version 0.9.2
ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 10
PCI: setting IRQ 10 as level-triggered
ACPI: PCI Interrupt 0000:00:02.0[A] -> Link [LNKA] -> GSI 10 (level, low) -> IRQ
 10
intelfb: 00:02.0: Intel(R) 852GM, aperture size 128MB, stolen memory 32636kB
intelfb: MTRR is disabled in the kernel
intelfb: Non-CRT device is enabled ( LVDS port ).  Disabling mode switching.
intelfb: Initial video mode is 1024x768-32@60.
intelfb: Changing the video mode is not supported.
Console: switching to colour frame buffer device 128x48

then same stuff like in 2.6.11 but dont work ;-/

In kernel i have compiled Graphic support -> * Support for the frame buffer devices -> * Intel 830/....

 Console display and driver support -> * Video mode selection support , * Framebuffer console support

 all this stuff compiled in kernel, not as module.



Any idea where can be problem ? why it doesnt work with new kernel, so its this drivers broken ? Thanks





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Re: intelfb broken ?

[Antonino A. Daplas]

janik holy wrote:
> Hello, i have hp compaq nx9020 with Display controller: Intel Corp. 82852/855GM Integrated Graphics Device (rev 02), im trying run console with framebuffer -> intelfb, in kernel 2.6.11, and vga=792, all work ok, just cursor is not visible. In all kernel > 2.6.11, vga=792, my laptop just booting, all should work, but display is all the time blank, nothing is seen.
> 
> this is log from 2.6.11, where all work but cursor is not visible, in lilo vga=792, because append=intelfb... is impossible to use if laptop...
> 
> intelfb: 00:02.0: Intel(R) 852GM, aperture size 128MB, stolen memory 32636kB
> intelfb: MTRR is disabled in the kernel
> intelfb: Non-CRT device is enabled ( LVDS port ).  Disabling mode switching.
> intelfb: Initial video mode is 1024x768-32@60.
> intelfb: Changing the video mode is not supported.
> Console: switching to colour frame buffer device 128x48
> 
> with > 2.6.11, actually 2.6.13.2 laptop boot, but on display is nothing, just black .. better blank display i try to look at dmesg (by blind)
> intelfb: Framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G chipset
> s
> intelfb: Version 0.9.2
> ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 10
> PCI: setting IRQ 10 as level-triggered
> ACPI: PCI Interrupt 0000:00:02.0[A] -> Link [LNKA] -> GSI 10 (level, low) -> IRQ
>  10
> intelfb: 00:02.0: Intel(R) 852GM, aperture size 128MB, stolen memory 32636kB
> intelfb: MTRR is disabled in the kernel
> intelfb: Non-CRT device is enabled ( LVDS port ).  Disabling mode switching.
> intelfb: Initial video mode is 1024x768-32@60.
> intelfb: Changing the video mode is not supported.
> Console: switching to colour frame buffer device 128x48
> 
> then same stuff like in 2.6.11 but dont work ;-/
> 
> In kernel i have compiled Graphic support -> * Support for the frame buffer devices -> * Intel 830/....
> 
>  Console display and driver support -> * Video mode selection support , * Framebuffer console support
> 
>  all this stuff compiled in kernel, not as module.
> 
> 
> 
> Any idea where can be problem ? why it doesnt work with new kernel, so its this drivers broken ? Thanks
> 
> 

Yes there was a regression when 2.6.13 came out.  Try this patch until the
intelfb maintainer has time to submit a definitive fix.

- Workaround for the ioremap patch that produces a blank display on some
  chipsets
- Make hwcursor = 0 the default.  The hardware cursor does not work with all
  hardware.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
---

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -767,6 +767,7 @@ config FB_INTEL
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
+	select FB_SOFT_CURSOR
 	help
 	  This driver supports the on-board graphics built in to the Intel
           830M/845G/852GM/855GM/865G chipsets.
diff --git a/drivers/video/intelfb/intelfbdrv.c b/drivers/video/intelfb/intelfbdrv.c
--- a/drivers/video/intelfb/intelfbdrv.c
+++ b/drivers/video/intelfb/intelfbdrv.c
@@ -226,7 +226,7 @@ MODULE_DEVICE_TABLE(pci, intelfb_pci_tab
 
 static int accel        = 1;
 static int vram         = 4;
-static int hwcursor     = 1;
+static int hwcursor     = 0;
 static int mtrr         = 1;
 static int fixed        = 0;
 static int noinit       = 0;
@@ -609,15 +609,9 @@ intelfb_pci_register(struct pci_dev *pde
 		dinfo->accel = 0;
 	}
 
-	if (MB(voffset) < stolen_size)
-		offset = (stolen_size >> 12);
-	else
-		offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
-
 	/* Framebuffer parameters - Use all the stolen memory if >= vram */
-	if (ROUND_UP_TO_PAGE(stolen_size) >= ((offset << 12) +  MB(vram))) {
+	if (ROUND_UP_TO_PAGE(stolen_size) >= MB(vram)) {
 		dinfo->fb.size = ROUND_UP_TO_PAGE(stolen_size);
-		dinfo->fb.offset = 0;
 		dinfo->fbmem_gart = 0;
 	} else {
 		dinfo->fb.size =  MB(vram);
@@ -648,6 +642,11 @@ intelfb_pci_register(struct pci_dev *pde
 		return -ENODEV;
 	}
 
+	if (MB(voffset) < stolen_size)
+		offset = (stolen_size >> 12);
+	else
+		offset = ROUND_UP_TO_PAGE(MB(voffset))/GTT_PAGE_SIZE;
+
 	/* set the mem offsets - set them after the already used pages */
 	if (dinfo->accel) {
 		dinfo->ring.offset = offset + gtt_info.current_memory;
@@ -662,10 +661,11 @@ intelfb_pci_register(struct pci_dev *pde
 			+ (dinfo->cursor.size >> 12);
 	}
 
+	/* Allocate memories (which aren't stolen) */
 	/* Map the fb and MMIO regions */
 	/* ioremap only up to the end of used aperture */
 	dinfo->aperture.virtual = (u8 __iomem *)ioremap_nocache
-		(dinfo->aperture.physical, (dinfo->fb.offset << 12)
+		(dinfo->aperture.physical, ((offset + dinfo->fb.offset) << 12)
 		 + dinfo->fb.size);
 	if (!dinfo->aperture.virtual) {
 		ERR_MSG("Cannot remap FB region.\n");
@@ -682,7 +682,6 @@ intelfb_pci_register(struct pci_dev *pde
 		return -ENODEV;
 	}
 
-	/* Allocate memories (which aren't stolen) */
 	if (dinfo->accel) {
 		if (!(dinfo->gtt_ring_mem =
 		      agp_allocate_memory(bridge, dinfo->ring.size >> 12,
@@ -1484,7 +1483,7 @@ intelfb_cursor(struct fb_info *info, str
 #endif
 
 	if (!dinfo->hwcursor)
-		return -ENXIO;
+		return soft_cursor(info, cursor);
 
 	intelfbhw_cursor_hide(dinfo);