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

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Message-ID: <CA+icZUUHWhqBKLzN4J9TZYXXKCDGVXkBhfa0-dkpBaU2pwB7qg@mail.gmail.com>
Date:	Sat, 28 May 2016 12:04:28 +0200
From:	Sedat Dilek <sedat.dilek@...il.com>
To:	Chris Bainbridge <chris.bainbridge@...il.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 5/27/16, Chris Bainbridge <chris.bainbridge@...il.com> wrote:
> On 25 May 2016 at 08:31, 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
>
> Guessing this is https://bugs.freedesktop.org/show_bug.cgi?id=95736
>

I did some last testing (for this weekend) with drm-intel-nightly
(2016y-05m-27d-12h-32m-45s UTC) on top of Linux v4.6 final.

This did not help as I see the same *ERROR* outputs.

- Sedat -

View attachment "dmesg_4.6.0-11-iniza-small.txt" of type "text/plain" (62375 bytes)

Download attachment "config-4.6.0-11-iniza-small" of type "application/octet-stream" (135172 bytes)