Bug 33312 - Dragging windows often results in display corruption
Summary: Dragging windows often results in display corruption
Status: RESOLVED WORKSFORME
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: xf86-video-ati maintainers
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-01-20 16:23 UTC by David Rees
Modified: 2011-01-23 11:50 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
xorg.conf (721 bytes, text/plain)
2011-01-20 16:23 UTC, David Rees 		no flags Details
Xorg.0.log (237.11 KB, text/plain)
2011-01-20 16:24 UTC, David Rees 		no flags Details
Corruption which often occurs in a terminal after moving it. (9.09 KB, image/png)
2011-01-20 16:25 UTC, David Rees 		no flags Details
View All

Description David Rees 2011-01-20 16:23:24 UTC 
Often when dragging windows, the display of the window is corrupted with the
contents of other windows and the same window shifted around.

It is easy to reproduce in just normal operations - can usually reproduce in less than a minute.

Turning NoAccel eliminates the issue.

This is a Fedora 14 system.  I reported this issue downstream[1] a while ago, but haven't seen any activity.

https://bugzilla.redhat.com/show_bug.cgi?id=665947
Comment 1 David Rees 2011-01-20 16:23:40 UTC 
Created attachment 42250 [details]
xorg.conf
Comment 2 David Rees 2011-01-20 16:24:05 UTC 
Created attachment 42251 [details]
Xorg.0.log
Comment 3 David Rees 2011-01-20 16:25:06 UTC 
Created attachment 42252 [details]
Corruption which often occurs in a terminal after moving it.
Comment 4 Alex Deucher 2011-01-20 16:34:36 UTC 
You are using UMS.  It should work better if you enable KMS.
Comment 5 David Rees 2011-01-20 16:52:59 UTC 
Whoops, forgot I had nomodeset on the command line as I had issues on this particular machine without it at one time.

Just rebooted without it and so far so good after 5 minutes of using the desktop...  Will close this bug (and the downstream one) if I can go a day without seeing the issue come back.

Thanks for the tip!
Comment 6 David Rees 2011-01-21 10:41:30 UTC 
Seems to be solved with KMS on.  Closing bug.
Comment 7 Stefan Ring 2011-01-23 11:39:58 UTC 
I have an extremely similar case which I also reported on Fedora Bugzilla a while ago, without much attention, unfortunately: https://bugzilla.redhat.com/show_bug.cgi?id=665320

As described there, the problem appeared after an upgrade from 1.9.1 to 1.9.3.
Comment 8 Stefan Ring 2011-01-23 11:42:50 UTC 
I forgot to mention: mine is not caused by the Radeon driver, but it seems to be too much of a coincidence that this is not caused by the same underlying problem.

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