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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CA+icZUXb-Fmw=nOFWoG+KEABs0bt6ENuY7rFRNBLEt=kDp+vzQ@mail.gmail.com>
Date:	Thu, 26 May 2016 07:40:48 +0200
From:	Sedat Dilek <sedat.dilek@...il.com>
To:	Jani Nikula <jani.nikula@...ux.intel.com>
Cc:	Daniel Vetter <daniel.vetter@...ll.ch>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [Intel-gfx] [v4.6-10530-g28165ec7a99b] i915: *ERROR* "CPU
 pipe/PCH transcoder" A FIFO underrun

On 5/25/16, Jani Nikula <jani.nikula@...ux.intel.com> wrote:
> On Wed, 25 May 2016, Sedat Dilek <sedat.dilek@...il.com> 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@intel.com
>
>
>
> --
> 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 -

View attachment "dmesg_4.6.0-10530.2-iniza-small.txt" of type "text/plain" (64103 bytes)