[v4.6-10530-g28165ec7a99b] i915: *ERROR* "CPU pipe/PCH transcoder" A FIFO underrun

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[v4.6-10530-g28165ec7a99b] i915: *ERROR* "CPU pipe/PCH transcoder" A FIFO underrun

Sedat Dilek-2
Hi Daniel,

with latest Linus Git I see this with my Intel SandyBridge GPU...

[   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
*ERROR* CPU pipe A FIFO underrun
[   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
*ERROR* uncleared pch fifo underrun on pch transcoder A
[   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
*ERROR* PCH transcoder A FIFO underrun

Attached are my linux-config, dmesg-output anx Xorg-log.

Any other informations you need?

Regards,
- Sedat -

dmesg_4.6.0-10530.1-iniza-small.txt (83K) Download Attachment
config-4.6.0-10530.1-iniza-small (181K) Download Attachment
Xorg.0.log (30K) Download Attachment
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Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: *ERROR* "CPU pipe/PCH transcoder" A FIFO underrun

Jani Nikula-3
On Wed, 25 May 2016, Sedat Dilek <[hidden email]> wrote:

> Hi Daniel,
>
> with latest Linus Git I see this with my Intel SandyBridge GPU...
>
> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
> *ERROR* CPU pipe A FIFO underrun
> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
> *ERROR* uncleared pch fifo underrun on pch transcoder A
> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
> *ERROR* PCH transcoder A FIFO underrun
>
> Attached are my linux-config, dmesg-output anx Xorg-log.
>
> Any other informations you need?

For starters, please try the fixes pull I just sent on top [1]. There's
a couple of watermark fixes.

BR,
Jani.



[1] http://mid.gmane.org/87zirebjm7.fsf@...



--
Jani Nikula, Intel Open Source Technology Center
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Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: *ERROR* "CPU pipe/PCH transcoder" A FIFO underrun

Sedat Dilek-2
On 5/25/16, Jani Nikula <[hidden email]> wrote:

> On Wed, 25 May 2016, Sedat Dilek <[hidden email]> wrote:
>> Hi Daniel,
>>
>> with latest Linus Git I see this with my Intel SandyBridge GPU...
>>
>> [   17.629014] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
>> *ERROR* CPU pipe A FIFO underrun
>> [   17.630652] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
>> *ERROR* uncleared pch fifo underrun on pch transcoder A
>> [   17.630685] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
>> *ERROR* PCH transcoder A FIFO underrun
>>
>> Attached are my linux-config, dmesg-output anx Xorg-log.
>>
>> Any other informations you need?
>
> For starters, please try the fixes pull I just sent on top [1]. There's
> a couple of watermark fixes.
>
> BR,
> Jani.
>
>
>
> [1] http://mid.gmane.org/87zirebjm7.fsf@...
>
>
>
> --
> Jani Nikula, Intel Open Source Technology Center
>
I pulled in drm-intel.git#tags/drm-intel-next-fixes-2016-05-25 on top
of above mentionned latest Linus Git and the problem still remains!

$ dmesg | egrep i915 | grep -i error
[   19.583713] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
*ERROR* CPU pipe A FIFO underrun
[   19.586363] [drm:intel_set_pch_fifo_underrun_reporting [i915]]
*ERROR* uncleared pch fifo underrun on pch transcoder A
[   19.586399] [drm:intel_pch_fifo_underrun_irq_handler [i915]]
*ERROR* PCH transcoder A FIFO underrun

I have attached my dmesg-output only, the linux-config I had sent earlier.

- Sedat -

dmesg_4.6.0-10530.2-iniza-small.txt (85K) Download Attachment