https://bugzilla.kernel.org/show_bug.cgi?id=44121
--- Comment #3 from Jérôme Glisse glisse@freedesktop.org 2012-07-03 15:42:09 --- Created an attachment (id=74671) --> (https://bugzilla.kernel.org/attachment.cgi?id=74671) properly disable render backend
Does this patch fix it ?