https://bugs.freedesktop.org/show_bug.cgi?id=84944
--- Comment #12 from warpme@o2.pl --- (In reply to Michel Dänzer from comment #10)
(In reply to Christian König from comment #9)
Please try to investigate what MythTV is actually doing different here to cause the page flipping to not work correctly.
It would be interesting to know why the function can_flip() in xf86-video-ati/src/radeon_dri2.c returns FALSE. warpme, if you're familiar with gdb, you can attach it (from ssh) to the Xorg process while MythTV is running, set a breakpoint at that function and trace its execution. Otherwise, we may have to modify the function to print some debugging output.
Oh - minimyth2 is really minimalistic http downloaded, RAM expanded OS image. Image has only binaries which are a must to run only mythtv. debuging it via gdb/breakpoints - compared to printing debug outputs - is at least one order of magnitude bigger task to do :-( So if it is possible - I really strongly prefer approach with modified functions to print some debugging outputs. br