linux-kernel - Re: 2.6.31 -> 2.6.32 Sound and video regressions

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Message-ID: <4B1A6F78.8010408@myrealbox.com>
Date:	Sat, 05 Dec 2009 09:34:32 -0500
From:	Andy Lutomirski <luto@...ealbox.com>
To:	Emmanuel Benisty <benisty.e@...il.com>
CC:	linux-kernel@...r.kernel.org, tiwai@...e.de,
	jbarnes@...tuousgeek.org, intel-gfx@...ts.freedesktop.org
Subject: Re: 2.6.31 -> 2.6.32 Sound and video regressions

Emmanuel Benisty wrote:
> Hi,
> 
> I hope I didn't miss something but given the traffic of LKML, that
> could have happened.
> 
> I just wanted to report 2 regressions I am having now with 2.6.32.
> 
> Video
> Screen is flickering/glitching like crazy in X. It happens whether
> randomly or when conky is refreshed, when the mouse cursor moves and
> like hell when a page is loading in the browser. Not so easy to
> describe this issue.
> Xorg.0.log is attached.
> (I've uploaded an utterly crappy mobile phone video if needed but I
> doubt this could be of any help, anyway, it's here
> http://omploader.org/vMngzcA/Xorg.tar.bz2 )

That sounds like FIFO underruns, which (I think) were introduced when 
self-refresh was enabled but should have been fixed.  I personally have 
no clue how to fix them, but if you told the Intel people what kind of 
chip you have (lspci output), they can probably fix it.  (cc added)

--Andy
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