Bug 22831 - 2.8rc regression on GM45: glxgears: black window with "failed to acquire vblank counter, -22" in dmesg
Summary: 2.8rc regression on GM45: glxgears: black window with "failed to acquire vbla...
Status: RESOLVED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium major
Assignee: Eric Anholt
QA Contact: Xorg Project Team
URL: http://bugs.debian.org/cgi-bin/bugrep...
Whiteboard:
Keywords: regression
Depends on:
Blocks:
 
Reported: 2009-07-18 03:34 UTC by Simon McVittie
Modified: 2009-07-22 19:50 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:

Attachments

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: 2.7.99.902-1 (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
(experimental)

* 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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