PROBLEM: Intel HDMI output busticated on 4.4 (regression)

PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Nick Bowler]

Hi,

Upgrading from 4.3 to 4.4 breaks my HDMI output on my G45 machine.

As soon as the intel driver is loaded, the monitor shuts off
(standby mode).  Inspecting /sys/class/drm/card0-HDMI-A-1/status
reports "disconnected".  When it is working, this attribute says
"connected".

There is nothing unusual printed to dmesg.

Bisection pinpoints the following:

  237ed86c693d8a8e4db476976aeb30df4deac74b is the first bad commit
  commit 237ed86c693d8a8e4db476976aeb30df4deac74b
  Author: Sonika Jindal <sonika.jindal@intel.com>
  Date:   Tue Sep 15 09:44:20 2015 +0530
  
      drm/i915: Check live status before reading edid
      [...]
      Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
      Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
      Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
      Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

The commit does not revert cleanly, but this patch resolves the issue:

diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index e6c035b0fc1c..8cefb9105f26 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1393,7 +1393,7 @@ intel_hdmi_detect(struct drm_connector *connector, bool force)
 
        intel_hdmi_unset_edid(connector);
 
-       if (intel_hdmi_set_edid(connector, live_status)) {
+       if (intel_hdmi_set_edid(connector, true)) {
                struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
 
                hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;

Let me know if you need any more info.

Thanks,
  Nick

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Jindal, Sonika]

Can you please check if you have following patch:
"commit 3d8acd1f667b45c531401c8f0c2033072e32a05d
Author: Gary Wang <gary.c.wang@intel.com>
Date:   Wed Dec 23 16:11:35 2015 +0800

drm/i915: increase the tries for HDMI hotplug live status checking"

For some monitors, 30ms delay is not good enough to report the live 
status correctly.

Does the same system works with any other monitor?

Daniel,

Can this be related to the live status bits on g45?
"commit 0ce99f749b3834edeb500e17d6ad17e86b60ff83
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Jul 26 11:27:49 2013 +0200

     drm/i915: fix gen4 digital port hotplug definitions"

Regards,
Sonika


On 1/20/2016 3:56 AM, Nick Bowler wrote:
> Hi,
>
> Upgrading from 4.3 to 4.4 breaks my HDMI output on my G45 machine.
>
> As soon as the intel driver is loaded, the monitor shuts off
> (standby mode).  Inspecting /sys/class/drm/card0-HDMI-A-1/status
> reports "disconnected".  When it is working, this attribute says
> "connected".
>
> There is nothing unusual printed to dmesg.
>
> Bisection pinpoints the following:
>
>    237ed86c693d8a8e4db476976aeb30df4deac74b is the first bad commit
>    commit 237ed86c693d8a8e4db476976aeb30df4deac74b
>    Author: Sonika Jindal <sonika.jindal@intel.com>
>    Date:   Tue Sep 15 09:44:20 2015 +0530
>    
>        drm/i915: Check live status before reading edid
>        [...]
>        Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
>        Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
>        Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
>        Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
>
> The commit does not revert cleanly, but this patch resolves the issue:
>
> diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
> index e6c035b0fc1c..8cefb9105f26 100644
> --- a/drivers/gpu/drm/i915/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/intel_hdmi.c
> @@ -1393,7 +1393,7 @@ intel_hdmi_detect(struct drm_connector *connector, bool force)
>   
>          intel_hdmi_unset_edid(connector);
>   
> -       if (intel_hdmi_set_edid(connector, live_status)) {
> +       if (intel_hdmi_set_edid(connector, true)) {
>                  struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
>   
>                  hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;
>
> Let me know if you need any more info.
>
> Thanks,
>    Nick

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Jindal, Sonika]

Can you please check if you have following patch:
"commit 3d8acd1f667b45c531401c8f0c2033072e32a05d
Author: Gary Wang <gary.c.wang@intel.com>
Date:   Wed Dec 23 16:11:35 2015 +0800

drm/i915: increase the tries for HDMI hotplug live status checking"

For some monitors, 30ms delay is not good enough to report the live 
status correctly.

Does the same system works with any other monitor?

Daniel,

Can this be related to the live status bits on g45?
"commit 0ce99f749b3834edeb500e17d6ad17e86b60ff83
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Jul 26 11:27:49 2013 +0200

     drm/i915: fix gen4 digital port hotplug definitions"

Regards,
Sonika


On 1/20/2016 3:56 AM, Nick Bowler wrote:
> Hi,
>
> Upgrading from 4.3 to 4.4 breaks my HDMI output on my G45 machine.
>
> As soon as the intel driver is loaded, the monitor shuts off
> (standby mode).  Inspecting /sys/class/drm/card0-HDMI-A-1/status
> reports "disconnected".  When it is working, this attribute says
> "connected".
>
> There is nothing unusual printed to dmesg.
>
> Bisection pinpoints the following:
>
>    237ed86c693d8a8e4db476976aeb30df4deac74b is the first bad commit
>    commit 237ed86c693d8a8e4db476976aeb30df4deac74b
>    Author: Sonika Jindal <sonika.jindal@intel.com>
>    Date:   Tue Sep 15 09:44:20 2015 +0530
>    
>        drm/i915: Check live status before reading edid
>        [...]
>        Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
>        Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
>        Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
>        Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
>
> The commit does not revert cleanly, but this patch resolves the issue:
>
> diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
> index e6c035b0fc1c..8cefb9105f26 100644
> --- a/drivers/gpu/drm/i915/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/intel_hdmi.c
> @@ -1393,7 +1393,7 @@ intel_hdmi_detect(struct drm_connector *connector, bool force)
>   
>          intel_hdmi_unset_edid(connector);
>   
> -       if (intel_hdmi_set_edid(connector, live_status)) {
> +       if (intel_hdmi_set_edid(connector, true)) {
>                  struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
>   
>                  hdmi_to_dig_port(intel_hdmi)->base.type = INTEL_OUTPUT_HDMI;
>
> Let me know if you need any more info.
>
> Thanks,
>    Nick

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Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Nick Bowler]

Hi,

On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> Can you please check if you have following patch:
> "commit 3d8acd1f667b45c531401c8f0c2033072e32a05d
> Author: Gary Wang <gary.c.wang@intel.com>
> Date:   Wed Dec 23 16:11:35 2015 +0800
>
> drm/i915: increase the tries for HDMI hotplug live status checking"

Yes, that patch seems to be present in 4.4.

> Does the same system works with any other monitor?

I'll see if I can find another to try.

Thanks,
  Nick

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Nick Bowler]

On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
> Hi,
>
> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
>> Can you please check if you have following patch:
>> "commit 3d8acd1f667b45c531401c8f0c2033072e32a05d
>> Author: Gary Wang <gary.c.wang@intel.com>
>> Date:   Wed Dec 23 16:11:35 2015 +0800
>>
>> drm/i915: increase the tries for HDMI hotplug live status checking"
>
> Yes, that patch seems to be present in 4.4.
>
>> Does the same system works with any other monitor?
>
> I'll see if I can find another to try.

I tried another monitor, and the same problem occurs.

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Jindal, Sonika]

On 1/21/2016 8:59 AM, Nick Bowler wrote:
> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
>> Hi,
>>
>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
>>> Can you please check if you have following patch:
>>> "commit 3d8acd1f667b45c531401c8f0c2033072e32a05d
>>> Author: Gary Wang <gary.c.wang@intel.com>
>>> Date:   Wed Dec 23 16:11:35 2015 +0800
>>>
>>> drm/i915: increase the tries for HDMI hotplug live status checking"
>> Yes, that patch seems to be present in 4.4.
>>
>>> Does the same system works with any other monitor?
>> I'll see if I can find another to try.
> I tried another monitor, and the same problem occurs.
Which make are these monitors?
Do you have any other system other than G45?

Shashank,
Do you suggest anything else which Nick can try?

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Jindal, Sonika]

On 1/21/2016 8:59 AM, Nick Bowler wrote:
> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
>> Hi,
>>
>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
>>> Can you please check if you have following patch:
>>> "commit 3d8acd1f667b45c531401c8f0c2033072e32a05d
>>> Author: Gary Wang <gary.c.wang@intel.com>
>>> Date:   Wed Dec 23 16:11:35 2015 +0800
>>>
>>> drm/i915: increase the tries for HDMI hotplug live status checking"
>> Yes, that patch seems to be present in 4.4.
>>
>>> Does the same system works with any other monitor?
>> I'll see if I can find another to try.
> I tried another monitor, and the same problem occurs.
Which make are these monitors?
Do you have any other system other than G45?

Shashank,
Do you suggest anything else which Nick can try?


_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Nick Bowler]

On 2016-01-21, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> On 1/21/2016 8:59 AM, Nick Bowler wrote:
>> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
[...]
>>>> Does the same system works with any other monitor?
>>> I'll see if I can find another to try.
>> I tried another monitor, and the same problem occurs.
> Which make are these monitors?

 - LG Flatron W2253V
 - Dell E228WFPc

> Do you have any other system other than G45?

Nothing else with Linux 4.4, unfortunately.

Thanks,
  Nick

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Nick Bowler]

On 2016-01-21, Nick Bowler <nbowler@draconx.ca> wrote:
> On 2016-01-21, Jindal, Sonika <sonika.jindal@intel.com> wrote:
>> On 1/21/2016 8:59 AM, Nick Bowler wrote:
>>> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
>>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> [...]
>>>>> Does the same system works with any other monitor?
>>>> I'll see if I can find another to try.
>>> I tried another monitor, and the same problem occurs.
>> Which make are these monitors?
>
>  - LG Flatron W2253V
>  - Dell E228WFPc
>
>> Do you have any other system other than G45?
>
> Nothing else with Linux 4.4, unfortunately.

Anything else you want me to try?

This issue is still present in 4.5-rc1.

Cheers,
  Nick

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Nick Bowler]

On 1/28/16, Nick Bowler <nbowler@draconx.ca> wrote:
> On 2016-01-21, Nick Bowler <nbowler@draconx.ca> wrote:
>> On 2016-01-21, Jindal, Sonika <sonika.jindal@intel.com> wrote:
>>> On 1/21/2016 8:59 AM, Nick Bowler wrote:
>>>> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
>>>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
>> [...]
>>>>>> Does the same system works with any other monitor?
>>>>> I'll see if I can find another to try.
>>>> I tried another monitor, and the same problem occurs.
>>> Which make are these monitors?
>>
>>  - LG Flatron W2253V
>>  - Dell E228WFPc
>>
>>> Do you have any other system other than G45?
>>
>> Nothing else with Linux 4.4, unfortunately.
>
> Anything else you want me to try?
>
> This issue is still present in 4.5-rc1.

Ping?

HDMI is still broken on my system in 4.5-rc3.

Cheers,
  Nick

RE: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Sharma, Shashank]

Hi Nick, 

Sonika is OOO for this week. 
AFAIK about this issue, looks like the live status is not getting set for your system, on HPD. 

As per the Bspec, we must check live status before trying to read EDID. 
Is it possible for you to check with an HDMI analyzer and probe live status register ?

Regards
Shashank
-----Original Message-----
From: Nick Bowler [mailto:nbowler@draconx.ca] 
Sent: Tuesday, February 09, 2016 10:03 PM
To: Jindal, Sonika
Cc: linux-kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; Daniel Vetter; Sharma, Shashank
Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

On 1/28/16, Nick Bowler <nbowler@draconx.ca> wrote:
> On 2016-01-21, Nick Bowler <nbowler@draconx.ca> wrote:
>> On 2016-01-21, Jindal, Sonika <sonika.jindal@intel.com> wrote:
>>> On 1/21/2016 8:59 AM, Nick Bowler wrote:
>>>> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
>>>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
>> [...]
>>>>>> Does the same system works with any other monitor?
>>>>> I'll see if I can find another to try.
>>>> I tried another monitor, and the same problem occurs.
>>> Which make are these monitors?
>>
>>  - LG Flatron W2253V
>>  - Dell E228WFPc
>>
>>> Do you have any other system other than G45?
>>
>> Nothing else with Linux 4.4, unfortunately.
>
> Anything else you want me to try?
>
> This issue is still present in 4.5-rc1.

Ping?

HDMI is still broken on my system in 4.5-rc3.

Cheers,
  Nick

RE: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Sharma, Shashank]

Hi Nick, 

Sonika is OOO for this week. 
AFAIK about this issue, looks like the live status is not getting set for your system, on HPD. 

As per the Bspec, we must check live status before trying to read EDID. 
Is it possible for you to check with an HDMI analyzer and probe live status register ?

Regards
Shashank
-----Original Message-----
From: Nick Bowler [mailto:nbowler@draconx.ca] 
Sent: Tuesday, February 09, 2016 10:03 PM
To: Jindal, Sonika
Cc: linux-kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; Daniel Vetter; Sharma, Shashank
Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

On 1/28/16, Nick Bowler <nbowler@draconx.ca> wrote:
> On 2016-01-21, Nick Bowler <nbowler@draconx.ca> wrote:
>> On 2016-01-21, Jindal, Sonika <sonika.jindal@intel.com> wrote:
>>> On 1/21/2016 8:59 AM, Nick Bowler wrote:
>>>> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
>>>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
>> [...]
>>>>>> Does the same system works with any other monitor?
>>>>> I'll see if I can find another to try.
>>>> I tried another monitor, and the same problem occurs.
>>> Which make are these monitors?
>>
>>  - LG Flatron W2253V
>>  - Dell E228WFPc
>>
>>> Do you have any other system other than G45?
>>
>> Nothing else with Linux 4.4, unfortunately.
>
> Anything else you want me to try?
>
> This issue is still present in 4.5-rc1.

Ping?

HDMI is still broken on my system in 4.5-rc3.

Cheers,
  Nick
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Ville Syrjälä]

On Tue, Feb 09, 2016 at 04:39:21PM +0000, Sharma, Shashank wrote:
> Hi Nick, 
> 
> Sonika is OOO for this week. 
> AFAIK about this issue, looks like the live status is not getting set for your system, on HPD. 
> 
> As per the Bspec, we must check live status before trying to read EDID. 
> Is it possible for you to check with an HDMI analyzer and probe live status register ?

BTW I'm not at all convinced about the current live status bit defines
we have for g4x. Supposedly someone tested them and found that they
don't match the spec, but IIRC when I tried them on one g4x machine
here, they did match the spec (well, at least for the ports present
on that particular board).

So something like this may or may not help:

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 188ad5de020f..80c08016e522 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3302,9 +3302,9 @@ enum skl_disp_power_wells {
  * Please check the detailed lore in the commit message for for experimental
  * evidence.
  */
-#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
+#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
 #define   PORTC_HOTPLUG_LIVE_STATUS_G4X		(1 << 28)
-#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
+#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
 /* VLV DP/HDMI bits again match Bspec */
 #define   PORTD_HOTPLUG_LIVE_STATUS_VLV		(1 << 27)
 #define   PORTC_HOTPLUG_LIVE_STATUS_VLV		(1 << 28)
-- 
2.4.10


> 
> Regards
> Shashank
> -----Original Message-----
> From: Nick Bowler [mailto:nbowler@draconx.ca] 
> Sent: Tuesday, February 09, 2016 10:03 PM
> To: Jindal, Sonika
> Cc: linux-kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; Daniel Vetter; Sharma, Shashank
> Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)
> 
> On 1/28/16, Nick Bowler <nbowler@draconx.ca> wrote:
> > On 2016-01-21, Nick Bowler <nbowler@draconx.ca> wrote:
> >> On 2016-01-21, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> >>> On 1/21/2016 8:59 AM, Nick Bowler wrote:
> >>>> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
> >>>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> >> [...]
> >>>>>> Does the same system works with any other monitor?
> >>>>> I'll see if I can find another to try.
> >>>> I tried another monitor, and the same problem occurs.
> >>> Which make are these monitors?
> >>
> >>  - LG Flatron W2253V
> >>  - Dell E228WFPc
> >>
> >>> Do you have any other system other than G45?
> >>
> >> Nothing else with Linux 4.4, unfortunately.
> >
> > Anything else you want me to try?
> >
> > This issue is still present in 4.5-rc1.
> 
> Ping?
> 
> HDMI is still broken on my system in 4.5-rc3.
> 
> Cheers,
>   Nick
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Ville Syrjälä
Intel OTC

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Ville Syrjälä]

On Tue, Feb 09, 2016 at 04:39:21PM +0000, Sharma, Shashank wrote:
> Hi Nick, 
> 
> Sonika is OOO for this week. 
> AFAIK about this issue, looks like the live status is not getting set for your system, on HPD. 
> 
> As per the Bspec, we must check live status before trying to read EDID. 
> Is it possible for you to check with an HDMI analyzer and probe live status register ?

BTW I'm not at all convinced about the current live status bit defines
we have for g4x. Supposedly someone tested them and found that they
don't match the spec, but IIRC when I tried them on one g4x machine
here, they did match the spec (well, at least for the ports present
on that particular board).

So something like this may or may not help:

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 188ad5de020f..80c08016e522 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3302,9 +3302,9 @@ enum skl_disp_power_wells {
  * Please check the detailed lore in the commit message for for experimental
  * evidence.
  */
-#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
+#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
 #define   PORTC_HOTPLUG_LIVE_STATUS_G4X		(1 << 28)
-#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
+#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
 /* VLV DP/HDMI bits again match Bspec */
 #define   PORTD_HOTPLUG_LIVE_STATUS_VLV		(1 << 27)
 #define   PORTC_HOTPLUG_LIVE_STATUS_VLV		(1 << 28)
-- 
2.4.10


> 
> Regards
> Shashank
> -----Original Message-----
> From: Nick Bowler [mailto:nbowler@draconx.ca] 
> Sent: Tuesday, February 09, 2016 10:03 PM
> To: Jindal, Sonika
> Cc: linux-kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; Daniel Vetter; Sharma, Shashank
> Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)
> 
> On 1/28/16, Nick Bowler <nbowler@draconx.ca> wrote:
> > On 2016-01-21, Nick Bowler <nbowler@draconx.ca> wrote:
> >> On 2016-01-21, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> >>> On 1/21/2016 8:59 AM, Nick Bowler wrote:
> >>>> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
> >>>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> >> [...]
> >>>>>> Does the same system works with any other monitor?
> >>>>> I'll see if I can find another to try.
> >>>> I tried another monitor, and the same problem occurs.
> >>> Which make are these monitors?
> >>
> >>  - LG Flatron W2253V
> >>  - Dell E228WFPc
> >>
> >>> Do you have any other system other than G45?
> >>
> >> Nothing else with Linux 4.4, unfortunately.
> >
> > Anything else you want me to try?
> >
> > This issue is still present in 4.5-rc1.
> 
> Ping?
> 
> HDMI is still broken on my system in 4.5-rc3.
> 
> Cheers,
>   Nick
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Ville Syrjälä
Intel OTC
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Ville Syrjälä]

On Tue, Feb 09, 2016 at 07:03:51PM +0200, Ville Syrjälä wrote:
> On Tue, Feb 09, 2016 at 04:39:21PM +0000, Sharma, Shashank wrote:
> > Hi Nick, 
> > 
> > Sonika is OOO for this week. 
> > AFAIK about this issue, looks like the live status is not getting set for your system, on HPD. 
> > 
> > As per the Bspec, we must check live status before trying to read EDID. 
> > Is it possible for you to check with an HDMI analyzer and probe live status register ?
> 
> BTW I'm not at all convinced about the current live status bit defines
> we have for g4x. Supposedly someone tested them and found that they
> don't match the spec, but IIRC when I tried them on one g4x machine
> here, they did match the spec (well, at least for the ports present
> on that particular board).
> 
> So something like this may or may not help:
> 
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 188ad5de020f..80c08016e522 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -3302,9 +3302,9 @@ enum skl_disp_power_wells {
>   * Please check the detailed lore in the commit message for for experimental
>   * evidence.
>   */
> -#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
> +#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
>  #define   PORTC_HOTPLUG_LIVE_STATUS_G4X		(1 << 28)
> -#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
> +#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
>  /* VLV DP/HDMI bits again match Bspec */
>  #define   PORTD_HOTPLUG_LIVE_STATUS_VLV		(1 << 27)
>  #define   PORTC_HOTPLUG_LIVE_STATUS_VLV		(1 << 28)

Just retested the g4x machine here, and port B is definitely on bit 29,
port C on bit 28. No port D on ELK, so can't check that. So either
someone made a fumble when they tested this originally, or some boards
are just wired incorrectly, or CTG is where it was tested and that
actually disagrees with the spec for some reason.

> -- 
> 2.4.10
> 
> 
> > 
> > Regards
> > Shashank
> > -----Original Message-----
> > From: Nick Bowler [mailto:nbowler@draconx.ca] 
> > Sent: Tuesday, February 09, 2016 10:03 PM
> > To: Jindal, Sonika
> > Cc: linux-kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; Daniel Vetter; Sharma, Shashank
> > Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)
> > 
> > On 1/28/16, Nick Bowler <nbowler@draconx.ca> wrote:
> > > On 2016-01-21, Nick Bowler <nbowler@draconx.ca> wrote:
> > >> On 2016-01-21, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> > >>> On 1/21/2016 8:59 AM, Nick Bowler wrote:
> > >>>> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
> > >>>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> > >> [...]
> > >>>>>> Does the same system works with any other monitor?
> > >>>>> I'll see if I can find another to try.
> > >>>> I tried another monitor, and the same problem occurs.
> > >>> Which make are these monitors?
> > >>
> > >>  - LG Flatron W2253V
> > >>  - Dell E228WFPc
> > >>
> > >>> Do you have any other system other than G45?
> > >>
> > >> Nothing else with Linux 4.4, unfortunately.
> > >
> > > Anything else you want me to try?
> > >
> > > This issue is still present in 4.5-rc1.
> > 
> > Ping?
> > 
> > HDMI is still broken on my system in 4.5-rc3.
> > 
> > Cheers,
> >   Nick
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> 
> -- 
> Ville Syrjälä
> Intel OTC
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Ville Syrjälä
Intel OTC

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Nick Bowler]

On 2/9/16, Ville Syrjälä <ville.syrjala@linux.intel.com> wrote:
> BTW I'm not at all convinced about the current live status bit defines
> we have for g4x. Supposedly someone tested them and found that they
> don't match the spec, but IIRC when I tried them on one g4x machine
> here, they did match the spec (well, at least for the ports present
> on that particular board).
>
> So something like this may or may not help:
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h
> b/drivers/gpu/drm/i915/i915_reg.h
> index 188ad5de020f..80c08016e522 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -3302,9 +3302,9 @@ enum skl_disp_power_wells {
>   * Please check the detailed lore in the commit message for for
> experimental
>   * evidence.
>   */
> -#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
> +#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
>  #define   PORTC_HOTPLUG_LIVE_STATUS_G4X		(1 << 28)
> -#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
> +#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
>  /* VLV DP/HDMI bits again match Bspec */
>  #define   PORTD_HOTPLUG_LIVE_STATUS_VLV		(1 << 27)
>  #define   PORTC_HOTPLUG_LIVE_STATUS_VLV		(1 << 28)

Well, I applied this on 4.5-rc3 and it seems to fix things.

Thanks,
  Nick

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Ville Syrjälä]

On Tue, Feb 09, 2016 at 07:36:41PM +0200, Ville Syrjälä wrote:
> On Tue, Feb 09, 2016 at 07:03:51PM +0200, Ville Syrjälä wrote:
> > On Tue, Feb 09, 2016 at 04:39:21PM +0000, Sharma, Shashank wrote:
> > > Hi Nick, 
> > > 
> > > Sonika is OOO for this week. 
> > > AFAIK about this issue, looks like the live status is not getting set for your system, on HPD. 
> > > 
> > > As per the Bspec, we must check live status before trying to read EDID. 
> > > Is it possible for you to check with an HDMI analyzer and probe live status register ?
> > 
> > BTW I'm not at all convinced about the current live status bit defines
> > we have for g4x. Supposedly someone tested them and found that they
> > don't match the spec, but IIRC when I tried them on one g4x machine
> > here, they did match the spec (well, at least for the ports present
> > on that particular board).
> > 
> > So something like this may or may not help:
> > 
> > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> > index 188ad5de020f..80c08016e522 100644
> > --- a/drivers/gpu/drm/i915/i915_reg.h
> > +++ b/drivers/gpu/drm/i915/i915_reg.h
> > @@ -3302,9 +3302,9 @@ enum skl_disp_power_wells {
> >   * Please check the detailed lore in the commit message for for experimental
> >   * evidence.
> >   */
> > -#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
> > +#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
> >  #define   PORTC_HOTPLUG_LIVE_STATUS_G4X		(1 << 28)
> > -#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
> > +#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
> >  /* VLV DP/HDMI bits again match Bspec */
> >  #define   PORTD_HOTPLUG_LIVE_STATUS_VLV		(1 << 27)
> >  #define   PORTC_HOTPLUG_LIVE_STATUS_VLV		(1 << 28)
> 
> Just retested the g4x machine here, and port B is definitely on bit 29,
> port C on bit 28. No port D on ELK, so can't check that. So either
> someone made a fumble when they tested this originally, or some boards
> are just wired incorrectly, or CTG is where it was tested and that
> actually disagrees with the spec for some reason.

I just tried to trawl the w/a database for anything interesting, and the
only thing I ran across was WaDPHDMISupriousHpd (without any description
of course) for both elk and ctg. Nothing else really relevant looking.

So I think we should get someone to double check this on ctg, and then
we can decide whether we change the bits just for elk or for ctg as well.

> 
> > -- 
> > 2.4.10
> > 
> > 
> > > 
> > > Regards
> > > Shashank
> > > -----Original Message-----
> > > From: Nick Bowler [mailto:nbowler@draconx.ca] 
> > > Sent: Tuesday, February 09, 2016 10:03 PM
> > > To: Jindal, Sonika
> > > Cc: linux-kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; Daniel Vetter; Sharma, Shashank
> > > Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)
> > > 
> > > On 1/28/16, Nick Bowler <nbowler@draconx.ca> wrote:
> > > > On 2016-01-21, Nick Bowler <nbowler@draconx.ca> wrote:
> > > >> On 2016-01-21, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> > > >>> On 1/21/2016 8:59 AM, Nick Bowler wrote:
> > > >>>> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
> > > >>>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> > > >> [...]
> > > >>>>>> Does the same system works with any other monitor?
> > > >>>>> I'll see if I can find another to try.
> > > >>>> I tried another monitor, and the same problem occurs.
> > > >>> Which make are these monitors?
> > > >>
> > > >>  - LG Flatron W2253V
> > > >>  - Dell E228WFPc
> > > >>
> > > >>> Do you have any other system other than G45?
> > > >>
> > > >> Nothing else with Linux 4.4, unfortunately.
> > > >
> > > > Anything else you want me to try?
> > > >
> > > > This issue is still present in 4.5-rc1.
> > > 
> > > Ping?
> > > 
> > > HDMI is still broken on my system in 4.5-rc3.
> > > 
> > > Cheers,
> > >   Nick
> > > _______________________________________________
> > > dri-devel mailing list
> > > dri-devel@lists.freedesktop.org
> > > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> > 
> > -- 
> > Ville Syrjälä
> > Intel OTC
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> 
> -- 
> Ville Syrjälä
> Intel OTC
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Ville Syrjälä
Intel OTC

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Ville Syrjälä]

On Tue, Feb 09, 2016 at 07:36:41PM +0200, Ville Syrjälä wrote:
> On Tue, Feb 09, 2016 at 07:03:51PM +0200, Ville Syrjälä wrote:
> > On Tue, Feb 09, 2016 at 04:39:21PM +0000, Sharma, Shashank wrote:
> > > Hi Nick, 
> > > 
> > > Sonika is OOO for this week. 
> > > AFAIK about this issue, looks like the live status is not getting set for your system, on HPD. 
> > > 
> > > As per the Bspec, we must check live status before trying to read EDID. 
> > > Is it possible for you to check with an HDMI analyzer and probe live status register ?
> > 
> > BTW I'm not at all convinced about the current live status bit defines
> > we have for g4x. Supposedly someone tested them and found that they
> > don't match the spec, but IIRC when I tried them on one g4x machine
> > here, they did match the spec (well, at least for the ports present
> > on that particular board).
> > 
> > So something like this may or may not help:
> > 
> > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> > index 188ad5de020f..80c08016e522 100644
> > --- a/drivers/gpu/drm/i915/i915_reg.h
> > +++ b/drivers/gpu/drm/i915/i915_reg.h
> > @@ -3302,9 +3302,9 @@ enum skl_disp_power_wells {
> >   * Please check the detailed lore in the commit message for for experimental
> >   * evidence.
> >   */
> > -#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
> > +#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
> >  #define   PORTC_HOTPLUG_LIVE_STATUS_G4X		(1 << 28)
> > -#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
> > +#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
> >  /* VLV DP/HDMI bits again match Bspec */
> >  #define   PORTD_HOTPLUG_LIVE_STATUS_VLV		(1 << 27)
> >  #define   PORTC_HOTPLUG_LIVE_STATUS_VLV		(1 << 28)
> 
> Just retested the g4x machine here, and port B is definitely on bit 29,
> port C on bit 28. No port D on ELK, so can't check that. So either
> someone made a fumble when they tested this originally, or some boards
> are just wired incorrectly, or CTG is where it was tested and that
> actually disagrees with the spec for some reason.

I just tried to trawl the w/a database for anything interesting, and the
only thing I ran across was WaDPHDMISupriousHpd (without any description
of course) for both elk and ctg. Nothing else really relevant looking.

So I think we should get someone to double check this on ctg, and then
we can decide whether we change the bits just for elk or for ctg as well.

> 
> > -- 
> > 2.4.10
> > 
> > 
> > > 
> > > Regards
> > > Shashank
> > > -----Original Message-----
> > > From: Nick Bowler [mailto:nbowler@draconx.ca] 
> > > Sent: Tuesday, February 09, 2016 10:03 PM
> > > To: Jindal, Sonika
> > > Cc: linux-kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; Daniel Vetter; Sharma, Shashank
> > > Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)
> > > 
> > > On 1/28/16, Nick Bowler <nbowler@draconx.ca> wrote:
> > > > On 2016-01-21, Nick Bowler <nbowler@draconx.ca> wrote:
> > > >> On 2016-01-21, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> > > >>> On 1/21/2016 8:59 AM, Nick Bowler wrote:
> > > >>>> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
> > > >>>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> > > >> [...]
> > > >>>>>> Does the same system works with any other monitor?
> > > >>>>> I'll see if I can find another to try.
> > > >>>> I tried another monitor, and the same problem occurs.
> > > >>> Which make are these monitors?
> > > >>
> > > >>  - LG Flatron W2253V
> > > >>  - Dell E228WFPc
> > > >>
> > > >>> Do you have any other system other than G45?
> > > >>
> > > >> Nothing else with Linux 4.4, unfortunately.
> > > >
> > > > Anything else you want me to try?
> > > >
> > > > This issue is still present in 4.5-rc1.
> > > 
> > > Ping?
> > > 
> > > HDMI is still broken on my system in 4.5-rc3.
> > > 
> > > Cheers,
> > >   Nick
> > > _______________________________________________
> > > dri-devel mailing list
> > > dri-devel@lists.freedesktop.org
> > > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> > 
> > -- 
> > Ville Syrjälä
> > Intel OTC
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> 
> -- 
> Ville Syrjälä
> Intel OTC
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Ville Syrjälä
Intel OTC
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

RE: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Sharma, Shashank]

I checked locally in BDC, 
Seems we don't have these boards available with us (in working state). 

Regards
Shashank
-----Original Message-----
From: Ville Syrjälä [mailto:ville.syrjala@linux.intel.com] 
Sent: Tuesday, February 09, 2016 11:53 PM
To: Sharma, Shashank
Cc: Nick Bowler; Daniel Vetter; linux-kernel@vger.kernel.org; dri-devel@lists.freedesktop.org
Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

On Tue, Feb 09, 2016 at 07:36:41PM +0200, Ville Syrjälä wrote:
> On Tue, Feb 09, 2016 at 07:03:51PM +0200, Ville Syrjälä wrote:
> > On Tue, Feb 09, 2016 at 04:39:21PM +0000, Sharma, Shashank wrote:
> > > Hi Nick,
> > > 
> > > Sonika is OOO for this week. 
> > > AFAIK about this issue, looks like the live status is not getting set for your system, on HPD. 
> > > 
> > > As per the Bspec, we must check live status before trying to read EDID. 
> > > Is it possible for you to check with an HDMI analyzer and probe live status register ?
> > 
> > BTW I'm not at all convinced about the current live status bit 
> > defines we have for g4x. Supposedly someone tested them and found 
> > that they don't match the spec, but IIRC when I tried them on one 
> > g4x machine here, they did match the spec (well, at least for the 
> > ports present on that particular board).
> > 
> > So something like this may or may not help:
> > 
> > diff --git a/drivers/gpu/drm/i915/i915_reg.h 
> > b/drivers/gpu/drm/i915/i915_reg.h index 188ad5de020f..80c08016e522 
> > 100644
> > --- a/drivers/gpu/drm/i915/i915_reg.h
> > +++ b/drivers/gpu/drm/i915/i915_reg.h
> > @@ -3302,9 +3302,9 @@ enum skl_disp_power_wells {
> >   * Please check the detailed lore in the commit message for for experimental
> >   * evidence.
> >   */
> > -#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
> > +#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
> >  #define   PORTC_HOTPLUG_LIVE_STATUS_G4X		(1 << 28)
> > -#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
> > +#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
> >  /* VLV DP/HDMI bits again match Bspec */
> >  #define   PORTD_HOTPLUG_LIVE_STATUS_VLV		(1 << 27)
> >  #define   PORTC_HOTPLUG_LIVE_STATUS_VLV		(1 << 28)
> 
> Just retested the g4x machine here, and port B is definitely on bit 
> 29, port C on bit 28. No port D on ELK, so can't check that. So either 
> someone made a fumble when they tested this originally, or some boards 
> are just wired incorrectly, or CTG is where it was tested and that 
> actually disagrees with the spec for some reason.

I just tried to trawl the w/a database for anything interesting, and the only thing I ran across was WaDPHDMISupriousHpd (without any description of course) for both elk and ctg. Nothing else really relevant looking.

So I think we should get someone to double check this on ctg, and then we can decide whether we change the bits just for elk or for ctg as well.

> 
> > --
> > 2.4.10
> > 
> > 
> > > 
> > > Regards
> > > Shashank
> > > -----Original Message-----
> > > From: Nick Bowler [mailto:nbowler@draconx.ca]
> > > Sent: Tuesday, February 09, 2016 10:03 PM
> > > To: Jindal, Sonika
> > > Cc: linux-kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; 
> > > Daniel Vetter; Sharma, Shashank
> > > Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 
> > > (regression)
> > > 
> > > On 1/28/16, Nick Bowler <nbowler@draconx.ca> wrote:
> > > > On 2016-01-21, Nick Bowler <nbowler@draconx.ca> wrote:
> > > >> On 2016-01-21, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> > > >>> On 1/21/2016 8:59 AM, Nick Bowler wrote:
> > > >>>> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
> > > >>>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> > > >> [...]
> > > >>>>>> Does the same system works with any other monitor?
> > > >>>>> I'll see if I can find another to try.
> > > >>>> I tried another monitor, and the same problem occurs.
> > > >>> Which make are these monitors?
> > > >>
> > > >>  - LG Flatron W2253V
> > > >>  - Dell E228WFPc
> > > >>
> > > >>> Do you have any other system other than G45?
> > > >>
> > > >> Nothing else with Linux 4.4, unfortunately.
> > > >
> > > > Anything else you want me to try?
> > > >
> > > > This issue is still present in 4.5-rc1.
> > > 
> > > Ping?
> > > 
> > > HDMI is still broken on my system in 4.5-rc3.
> > > 
> > > Cheers,
> > >   Nick
> > > _______________________________________________
> > > dri-devel mailing list
> > > dri-devel@lists.freedesktop.org
> > > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> > 
> > --
> > Ville Syrjälä
> > Intel OTC
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> 
> --
> Ville Syrjälä
> Intel OTC
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

--
Ville Syrjälä
Intel OTC

RE: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Sharma, Shashank]

I checked locally in BDC, 
Seems we don't have these boards available with us (in working state). 

Regards
Shashank
-----Original Message-----
From: Ville Syrjälä [mailto:ville.syrjala@linux.intel.com] 
Sent: Tuesday, February 09, 2016 11:53 PM
To: Sharma, Shashank
Cc: Nick Bowler; Daniel Vetter; linux-kernel@vger.kernel.org; dri-devel@lists.freedesktop.org
Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

On Tue, Feb 09, 2016 at 07:36:41PM +0200, Ville Syrjälä wrote:
> On Tue, Feb 09, 2016 at 07:03:51PM +0200, Ville Syrjälä wrote:
> > On Tue, Feb 09, 2016 at 04:39:21PM +0000, Sharma, Shashank wrote:
> > > Hi Nick,
> > > 
> > > Sonika is OOO for this week. 
> > > AFAIK about this issue, looks like the live status is not getting set for your system, on HPD. 
> > > 
> > > As per the Bspec, we must check live status before trying to read EDID. 
> > > Is it possible for you to check with an HDMI analyzer and probe live status register ?
> > 
> > BTW I'm not at all convinced about the current live status bit 
> > defines we have for g4x. Supposedly someone tested them and found 
> > that they don't match the spec, but IIRC when I tried them on one 
> > g4x machine here, they did match the spec (well, at least for the 
> > ports present on that particular board).
> > 
> > So something like this may or may not help:
> > 
> > diff --git a/drivers/gpu/drm/i915/i915_reg.h 
> > b/drivers/gpu/drm/i915/i915_reg.h index 188ad5de020f..80c08016e522 
> > 100644
> > --- a/drivers/gpu/drm/i915/i915_reg.h
> > +++ b/drivers/gpu/drm/i915/i915_reg.h
> > @@ -3302,9 +3302,9 @@ enum skl_disp_power_wells {
> >   * Please check the detailed lore in the commit message for for experimental
> >   * evidence.
> >   */
> > -#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
> > +#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
> >  #define   PORTC_HOTPLUG_LIVE_STATUS_G4X		(1 << 28)
> > -#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
> > +#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
> >  /* VLV DP/HDMI bits again match Bspec */
> >  #define   PORTD_HOTPLUG_LIVE_STATUS_VLV		(1 << 27)
> >  #define   PORTC_HOTPLUG_LIVE_STATUS_VLV		(1 << 28)
> 
> Just retested the g4x machine here, and port B is definitely on bit 
> 29, port C on bit 28. No port D on ELK, so can't check that. So either 
> someone made a fumble when they tested this originally, or some boards 
> are just wired incorrectly, or CTG is where it was tested and that 
> actually disagrees with the spec for some reason.

I just tried to trawl the w/a database for anything interesting, and the only thing I ran across was WaDPHDMISupriousHpd (without any description of course) for both elk and ctg. Nothing else really relevant looking.

So I think we should get someone to double check this on ctg, and then we can decide whether we change the bits just for elk or for ctg as well.

> 
> > --
> > 2.4.10
> > 
> > 
> > > 
> > > Regards
> > > Shashank
> > > -----Original Message-----
> > > From: Nick Bowler [mailto:nbowler@draconx.ca]
> > > Sent: Tuesday, February 09, 2016 10:03 PM
> > > To: Jindal, Sonika
> > > Cc: linux-kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; 
> > > Daniel Vetter; Sharma, Shashank
> > > Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 
> > > (regression)
> > > 
> > > On 1/28/16, Nick Bowler <nbowler@draconx.ca> wrote:
> > > > On 2016-01-21, Nick Bowler <nbowler@draconx.ca> wrote:
> > > >> On 2016-01-21, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> > > >>> On 1/21/2016 8:59 AM, Nick Bowler wrote:
> > > >>>> On 1/20/16, Nick Bowler <nbowler@draconx.ca> wrote:
> > > >>>>> On 2016-01-20, Jindal, Sonika <sonika.jindal@intel.com> wrote:
> > > >> [...]
> > > >>>>>> Does the same system works with any other monitor?
> > > >>>>> I'll see if I can find another to try.
> > > >>>> I tried another monitor, and the same problem occurs.
> > > >>> Which make are these monitors?
> > > >>
> > > >>  - LG Flatron W2253V
> > > >>  - Dell E228WFPc
> > > >>
> > > >>> Do you have any other system other than G45?
> > > >>
> > > >> Nothing else with Linux 4.4, unfortunately.
> > > >
> > > > Anything else you want me to try?
> > > >
> > > > This issue is still present in 4.5-rc1.
> > > 
> > > Ping?
> > > 
> > > HDMI is still broken on my system in 4.5-rc3.
> > > 
> > > Cheers,
> > >   Nick
> > > _______________________________________________
> > > dri-devel mailing list
> > > dri-devel@lists.freedesktop.org
> > > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> > 
> > --
> > Ville Syrjälä
> > Intel OTC
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> 
> --
> Ville Syrjälä
> Intel OTC
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

--
Ville Syrjälä
Intel OTC
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Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Jani Nikula]

On Tue, 09 Feb 2016, Nick Bowler <nbowler@draconx.ca> wrote:
> On 2/9/16, Ville Syrjälä <ville.syrjala@linux.intel.com> wrote:
>> BTW I'm not at all convinced about the current live status bit defines
>> we have for g4x. Supposedly someone tested them and found that they
>> don't match the spec, but IIRC when I tried them on one g4x machine
>> here, they did match the spec (well, at least for the ports present
>> on that particular board).
>>
>> So something like this may or may not help:
>>
>> diff --git a/drivers/gpu/drm/i915/i915_reg.h
>> b/drivers/gpu/drm/i915/i915_reg.h
>> index 188ad5de020f..80c08016e522 100644
>> --- a/drivers/gpu/drm/i915/i915_reg.h
>> +++ b/drivers/gpu/drm/i915/i915_reg.h
>> @@ -3302,9 +3302,9 @@ enum skl_disp_power_wells {
>>   * Please check the detailed lore in the commit message for for
>> experimental
>>   * evidence.
>>   */
>> -#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
>> +#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
>>  #define   PORTC_HOTPLUG_LIVE_STATUS_G4X		(1 << 28)
>> -#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
>> +#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
>>  /* VLV DP/HDMI bits again match Bspec */
>>  #define   PORTD_HOTPLUG_LIVE_STATUS_VLV		(1 << 27)
>>  #define   PORTC_HOTPLUG_LIVE_STATUS_VLV		(1 << 28)
>
> Well, I applied this on 4.5-rc3 and it seems to fix things.

Ville, please do a proper patch, using your best judgement on elk
vs. ctg difference.

BR,
Jani.

>
> Thanks,
>   Nick
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Jani Nikula, Intel Open Source Technology Center

Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression)

[Jani Nikula]

On Tue, 09 Feb 2016, Nick Bowler <nbowler@draconx.ca> wrote:
> On 2/9/16, Ville Syrjälä <ville.syrjala@linux.intel.com> wrote:
>> BTW I'm not at all convinced about the current live status bit defines
>> we have for g4x. Supposedly someone tested them and found that they
>> don't match the spec, but IIRC when I tried them on one g4x machine
>> here, they did match the spec (well, at least for the ports present
>> on that particular board).
>>
>> So something like this may or may not help:
>>
>> diff --git a/drivers/gpu/drm/i915/i915_reg.h
>> b/drivers/gpu/drm/i915/i915_reg.h
>> index 188ad5de020f..80c08016e522 100644
>> --- a/drivers/gpu/drm/i915/i915_reg.h
>> +++ b/drivers/gpu/drm/i915/i915_reg.h
>> @@ -3302,9 +3302,9 @@ enum skl_disp_power_wells {
>>   * Please check the detailed lore in the commit message for for
>> experimental
>>   * evidence.
>>   */
>> -#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
>> +#define   PORTD_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
>>  #define   PORTC_HOTPLUG_LIVE_STATUS_G4X		(1 << 28)
>> -#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 27)
>> +#define   PORTB_HOTPLUG_LIVE_STATUS_G4X		(1 << 29)
>>  /* VLV DP/HDMI bits again match Bspec */
>>  #define   PORTD_HOTPLUG_LIVE_STATUS_VLV		(1 << 27)
>>  #define   PORTC_HOTPLUG_LIVE_STATUS_VLV		(1 << 28)
>
> Well, I applied this on 4.5-rc3 and it seems to fix things.

Ville, please do a proper patch, using your best judgement on elk
vs. ctg difference.

BR,
Jani.

>
> Thanks,
>   Nick
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Jani Nikula, Intel Open Source Technology Center
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