Comment 60 for bug 320813

Derek, you're right, the patches aren't enough. It's harder to trigger though..

Can you try the patch from this post on top of the two earlier commits? I've tried it before and it worked for me (during the brief testing period), and upstream would like to know if it helps in this case:

http://www.mail-archive.com/dri-devel%40lists.sourceforge.net/msg37945.html