Bug 49442 - [i915GM] regression: some OpenGL elements are not rendered correctly
Summary: [i915GM] regression: some OpenGL elements are not rendered correctly
Status: NEW
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i915 (show other bugs)
Version: git
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Ian Romanick
QA Contact:
Depends on:
Reported: 2012-05-03 11:59 UTC by S. Christian Collins
Modified: 2014-04-10 15:53 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Xorg log file (27.35 KB, text/plain)
2012-05-03 11:59 UTC, S. Christian Collins
screenshot showing bug (182.66 KB, image/png)
2012-05-03 12:00 UTC, S. Christian Collins
Screenshot of white stripes in KDE with mesa >8 (29.24 KB, image/png)
2014-04-09 22:25 UTC, T.Kijas

Note You need to log in before you can comment on or make changes to this bug.
Description S. Christian Collins 2012-05-03 11:59:21 UTC
Created attachment 60981 [details]
Xorg log file

I am running Kubuntu 12.04, and after upgrading to the packages in the xorg-edgers PPA, some OpenGL elements are no longer rendered correctly.  Among the package upgrades were:
 . xserver: 1.11.4 -> 1.12.1+git20120502+server-1.12-branch.ed33772a
 . xserver-xorg-video-intel: 2.19.0 (x-updates PPA) -> 2.19.0+git20120501.7e09babb

The rendering bug can be seen with GLX-dock.  I have attached a comparison screenshot where you can see the dock reflections are incorrect. and the icon below the one with focus disappears.

** My System **
OS: Kubuntu 12.04 i386 w/ KDE SC 4.8.2
PC: HP Pavilion dv1550se laptop
CPU: Intel(R) Pentium(R) M processor 1.60GHz
RAM: 1.5GB DDR400
Video: Mobile 915GM/GMS/910GML Express Graphics Controller
Sound: 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller
Linux Kernel: 3.2.0-24-generic
Screen Resolution: 1280 x 768
Comment 1 S. Christian Collins 2012-05-03 12:00:10 UTC
Created attachment 60982 [details]
screenshot showing bug
Comment 2 Chris Wilson 2012-05-03 12:25:17 UTC
Can we identify which package is the culprit? i.e. purge the ppa then just install xserver-xorg-video-intel, then install libgl1-mesa-dri, testing after each step to see when the bug is introduced.
Comment 3 S. Christian Collins 2012-05-03 13:02:27 UTC
The problem appeared when I upgraded libgl1-mesa-dri from 8.0.2 to 8.1~git20120501.2d75a1e2 from the xorg-edgers PPA.  I have reassigned this bug to Mesa:Server/Ext/DRI.  Please reassign if this isn't correct.
Comment 4 Timo Aaltonen 2012-09-13 14:13:59 UTC
This has been verified on ubuntu too, see


bottom line: mesa 8.0.4 works, 9.0~ doesn't
Comment 5 T.Kijas 2014-04-09 22:24:05 UTC
The Mesa 10 and 9 suffers from white-stripes corruption in KDE4.8.4 and 4.11. The resolution is to downgrade to Mesa 8, but it is not avaliable in Ubuntu 14.04.
I think the problem with mesa is still here.
Found in Ivy bridge and Sandy bridge.
Comment 6 T.Kijas 2014-04-09 22:25:10 UTC
Created attachment 97158 [details]
Screenshot of white stripes in KDE with mesa >8
Comment 7 Ian Romanick 2014-04-10 12:37:51 UTC
Very little active work is happening on the i915 driver.  Is there any chance of getting an 8.0.4 to 8.1 bisect?  Without that, there's fairly little probability of this getting fixed...
Comment 8 S. Christian Collins 2014-04-10 15:53:58 UTC
As the reporter of this bug, I no longer have access to the i915 laptop for testing, so I'm afraid I won't be able to provide any more info or testing. Anybody else?

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct.