Bug 34556

Summary: BUG in drm/radeon/ttm after leaving fullscreen flash.
Product: DRI Reporter: Rafael Monica <monraaf>
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED INVALID QA Contact:
Severity: normal    
Priority: medium CC: christopher.m.penalver
Version: unspecified   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
black screen of death none

Description Rafael Monica 2011-02-22 03:29:51 UTC 
Created attachment 43645 [details]
black screen of death

Watching a youtube video fullscreen with adobe flashplayer and then leaving fullscreen sometimes triggers a bug in the drm/radeon/ttm, this is with kernel 2.6.38-rc5, ddx from git and happens with both stock r600c from ubuntu 10.10 and r600g from git master.

The bug is only triggered sporadicly, but a good way to reproduce I found is to go and play a youtube video. e.g. http://www.youtube.com/watch?v=8ETDE0VGJY4  then position the mouse pointer at the bottom-right of the player where the fullscreen button is and start clicking many times as fast as you can. The player will go fullscreen and leave fullscreen a couple of times and will eventually trigger the bug.
Comment 1 Rafael Monica 2011-02-22 03:55:27 UTC 
I think this is a bug with pageflipping. Whereas I have successfully have been able to trigger this bug all the 3 times I tried with the method mentioned above with pageflipping enabled, so far I'm unable to reproduce this with pageflipping disabled.
Comment 2 Alex Deucher 2011-02-22 08:00:28 UTC 
Are you using a GL compositor like compiz or kwin in GL mode?
Comment 3 Rafael Monica 2011-02-22 11:13:21 UTC 
Nope. Just plain metacity without any form of compositing.
Comment 4 Jonathan Nieder 2011-08-05 11:39:53 UTC 
Does v3.0-rc3~42^2~8 (drm/radeon: fix oops in ttm reserve when pageflipping (v2), 2011-05-29) help?
Comment 5 Christopher M. Penalver 2016-02-26 06:07:01 UTC 
Rafael Monica, Ubuntu 10.10 reached EOL on April 10, 2012. For more on this, please see https://wiki.ubuntu.com/Releases.

If this is reproducible with a supported release, it will help immensely if you filed a new report with Ubuntu by ensuring you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information running the following from a terminal:
ubuntu-bug xorg

Also, please feel free to subscribe me to it.

For more on why this is helpful, please see https://wiki.ubuntu.com/ReportingBugs.

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