https://bugs.freedesktop.org/show_bug.cgi?id=79850
--- Comment #6 from Michel D?nzer <michel at daenzer.net> --- First of all, if you are using a compositing manager, make sure it unredirects fullscreen windows. Also make sure vblank_mode isn't set to 0 in ~/.drirc or /etc/drirc or as an environment variable. With that ruled out, we'll need to work backwards why the driver can't use page flipping. The final decision on that happens in the X driver's can_flip function in radeon_dri2.c. From a remote shell, attach gdb to the X server process and set a breakpoint on that function. If it gets called, check which of its conditions are not met. -- You are receiving this mail because: You are the assignee for the bug. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20140612/49320ee5/attachment.html>