Created attachment 73886 [details]
Refer also https://bugs.gentoo.org/show_bug.cgi?id=454412
>=xf86-video-intel-2.20.18 installed with '--enable-sna' causes flash fullscreen video to freeze and sometimes crash Xorg entirely.
When the fullscreen video freezes it can be woken up by issuing some Xorg OSD (eg.Gnome/KDE volume display) but immediately freezes afterwards.
The audio continues playing in the background, just the video freezes.
The version of Adobe Flash does not matter, tested with 18.104.22.1681 and 10.3.183.50.
The version of kernel does not matter, tested with 3.4.11 and 3.7.1.
The bug occurs in multiple browsers.
Tested with Firefox, Chrome, Chromium and Opera.
Does not affect any xf86-video-intel version built with '--disable-sna'.
Using Intel® Ironlake Mobile GPU.
Bug does not occur if X11 compositing is disabled.
Xorg crash backtrace attached...
Can you please compile with --enable-debug=full, and attach the complete Xorg.log leading to the crash?
In gentoo, I believe it is USE=full-debug
I've built it with --enable-debug=full and the resulting Xorg.log can be found here -> http://ompldr.org/vaGEydA
This is using xf86-video-intel-2.20.19.
It was a 500MB file so thought it appropriate to tarball and upload elsewhere (now 16MB).
Thank you, that logfile was most informative:
Author: Chris Wilson <email@example.com>
Date: Wed Jan 30 08:42:48 2013 +0000
sna/dri: Make sure we discard the existing mappings when swapping GPU bo
If the GPU bo is currently mapped to the Pixmap, we need to be sure to
invalidate that mapping if we swap the GPU bo (for SwapBuffers). If we
forget, we leave a dangling pointer to chase.
Signed-off-by: Chris Wilson <firstname.lastname@example.org>
Even without doing a full git checkout and just using that commit as a patch to 2.20.19 source fixes the problem.
Thanks for the quick response and fix! :)