Bug 22831

Summary: 2.8rc regression on GM45: glxgears: black window with "failed to acquire vblank counter, -22" in dmesg
Product: xorg Reporter: Simon McVittie <smcv>
Component: Driver/intelAssignee: Eric Anholt <eric>
Status: RESOLVED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: major    
Priority: medium CC: cworth, leonidp.lists
Version: unspecifiedKeywords: regression
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
URL: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=537400
i915 platform: i915 features:

Description Simon McVittie 2009-07-18 03:34:55 UTC
This might be the same as Bug #22587, but the symptoms are rather different, so filing it separately. Logs etc. available from <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=537400>.

When running glxgears on a Lenovo X200s (Intel GM45) with the following software, a black window is displayed; resizing the window causes fragments of the normal display to be visible momentarily.

* Intel driver: (Debian unstable), also seen with yesterday's git
master (commit bb30073) merged into the Debian packaging

* Kernel: 2.6.31rc3 (buildserver.net snapshot) with and without i915.modeset=1,
also seen with 2.6.30 (Debian unstable) without i915.modeset=1

* libdrm: 2.4.11 (Debian unstable), also seen with 2.4.11+git+20090630+de1ed01

* Xorg: 1.6.2 (Debian unstable), also seen with prereleases

Downgrading xserver-xorg-video-intel to 2.7.1 (from Debian unstable) makes
glxgears work correctly (while keeping the other components the same) so this
is a regression in 2.8.
Comment 1 Gordon Jin 2009-07-19 18:06:13 UTC
Eric/Carl, can you reproduce? (Q2-rc3 is working fine on my GM45.)
Comment 2 Gordon Jin 2009-07-19 18:07:38 UTC
*** Bug 22838 has been marked as a duplicate of this bug. ***
Comment 3 Simon McVittie 2009-07-21 04:37:11 UTC
Upgrading to Mesa 7.5 fixed this for me; perhaps the new Intel driver tickles a recently-fixed Mesa bug or something?
Comment 4 Eric Anholt 2009-07-21 11:38:19 UTC
Works for me with mesa 7.4, 7.5, or master, but I'm on server master.

Are you still concerned with following up on this?
Comment 5 Leonid Podolny 2009-07-21 15:17:58 UTC
(In reply to comment #4)
> Works for me with mesa 7.4, 7.5, or master, but I'm on server master.
> Are you still concerned with following up on this?

I'm not sure what this question means, but I'm pretty concerned with this bug.

(I'm the original poster of Bug 22838)
Comment 6 Gordon Jin 2009-07-21 18:23:52 UTC
Simon, what's the previous mesa version used in your original report?

I guess this bug could be closed.

Leonid, if upgrading to mesa-7.5 doesn't fix it for you, you could reopen your bug.
Comment 7 Simon McVittie 2009-07-22 04:54:13 UTC
I was previously using Mesa 7.4.4 from Debian unstable.

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