linux-kernel - Re: [3.7-rc5/rc6 regression] "drm/nvc0/disp: fix regression in vblank semaphore release" broke nouveau driver and mplayer

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Message-ID: <20121117213845.GA4310@cucamonga.audible.transient.net>
Date:	Sat, 17 Nov 2012 21:38:45 +0000
From:	Jamie Heilman <jamie@...ible.transient.net>
To:	Mikael Pettersson <mikpe@...uu.se>
Cc:	David Airlie <airlied@...ux.ie>,
	Kelly Doran <kel.p.doran@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [3.7-rc5/rc6 regression] "drm/nvc0/disp: fix regression in
 vblank semaphore release" broke nouveau driver and mplayer

Mikael Pettersson wrote:
> mplayer worked fine on my Dell Latitude E6510 (nVidia GT218 [NVS
> 3100M] graphics) up to and including kernel 3.7-rc4. However, with
> 3.7-rc5 or -rc6, any attempt to run mplayer just blanks the screen,
> shows some stray white pixels in the upper left corner, kills the X
> server, and spews the following errors from the kernel:
...
> 
> The error is 100% repeatable.

I see the same problem on my workstation with a G86 [Quadro NVS 290] (rev a1)
running Debian (sid) with:
xserver-xorg-core 2:1.12.4-3
libdrm-nouveau1a:amd64 2.4.33-3
xserver-xorg-video-nouveau 1:1.0.1-3
and mplayer2 2.0-600-g95e81df w/the xv video output driver

> git bisect identified the following culprit:
> 
> 11d92561c81be2f4a7af37f035e1af294b960abe is the first bad commit

I bisected to the same commit as well.


-- 
Jamie Heilman                     http://audible.transient.net/~jamie/
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