Bug 703699

Summary: [SNB] Flickering in opengl windows (glxgears, neverball)
Product: [Fedora] Fedora Reporter: Joel F <joelfo>
Component: mesaAssignee: Dave Airlie <airlied>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 15CC: ajax, hdegoede, mcepl, xgl-maint
Target Milestone: ---Keywords: Triaged
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard: [cat:rendering]
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-03-28 07:31:53 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Attachments:
Description Flags
Xorg.0.log
none
dmesg none

Description Joel F 2011-05-11 04:44:11 UTC 
Description of problem:
Whenever starting an opengl application windowed, flickering and/or tearing appears.

Version-Release number of selected component (if applicable):
xorg-x11-drv-intel.x86_64          2.15.0-3.fc15
(previous version was fine, at least in Neverwinter nights)

How reproducible:
Always. Just easier to see in a big window.

Steps to Reproduce:
1. Start glxgears
  
Actual results:
Flickering/tearing

Expected results:
No flicker/tearing

Additional info:
Fullscreen modes of Neverwinter and Neverball seems to work better, but windowed is affected. My video chip is Sandybridge HD 3000 (core i5)
Comment 1 Matěj Cepl 2011-05-14 18:57:10 UTC 
Thanks for the bug report.  We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue.

Please add drm.debug=0x04 to the kernel command line, restart computer, and attach

* your X server config file (/etc/X11/xorg.conf, if available),
* X server log file (/var/log/Xorg.*.log)
* output of the dmesg command, and
* system log (/var/log/messages)

to the bug report as individual uncompressed file attachments using the bugzilla file attachment link above.

We will review this issue again once you've had a chance to attach this information.

Thanks in advance.
Comment 2 Joel F 2011-05-18 04:00:06 UTC 
Created attachment 499517 [details]
Xorg.0.log
Comment 3 Joel F 2011-05-18 04:01:05 UTC 
Created attachment 499518 [details]
dmesg
Comment 4 Joel F 2011-05-18 04:41:40 UTC 
It seems syslogd crashed or misbehaves, as /var/log/messages for this boot turned out empty. Restarting without the drm.debug=0x04 does still give me an empty v.l.messages. I just noticed this when I had already uploaded the other two. I will try downgrading the logging daemon

Downgrading the xorg-x11-drv-intel package to version 2.14.0-6.fc15 makes the flickering disappear.
Comment 5 Matěj Cepl 2011-05-19 12:01:58 UTC 
(In reply to comment #4)
> It seems syslogd crashed or misbehaves, as /var/log/messages for this boot
> turned out empty. Restarting without the drm.debug=0x04 does still give me an
> empty v.l.messages. I just noticed this when I had already uploaded the other
> two. I will try downgrading the logging daemon

Please, make a new bug for the syslog issue.

Thank you
Comment 6 Hans de Goede 2011-05-25 10:45:04 UTC 
I'm seeing this too, and I've filed a bug for this upstream:
https://bugs.freedesktop.org/show_bug.cgi?id=37571

See that bug for the details of my system, dmesg output, etc. Note that this also goes away when you upgrade your kernel to 2.6.39, from for example here:
http://koji.fedoraproject.org/koji/buildinfo?buildID=244663
Comment 7 Joel F 2012-03-28 07:02:06 UTC 
Fixed in F16 and F17, for information.
Comment 8 Hans de Goede 2012-03-28 07:31:53 UTC 
Thanks. It is fixed for me to, so lets close this bug then.