https://bugs.freedesktop.org/show_bug.cgi?id=28341
--- Comment #11 from Andy Furniss lists@andyfurniss.entadsl.com 2010-07-14 04:03:15 PDT --- (In reply to comment #10)
Does reverting xf86-video-ati Git commit 30591320ec46e491ba20904cc64f3405b51c6505 ('kms: add support for the MSC swap & sync API') fix this problem?
It doesn't revert on master for me.