scheduling/completion is supposed to work, it could be that you're hitting a limitation of the current nouveau ddx when pageflipping is enabled for bufferswaps: <http://cgit.freedesktop.org/nouveau/xf86-video-nouveau/tree/src/nouveau_dri2.c#n272> -> For page-flipped bufferswaps, which are on by default, the current ddx doesn't wait for swap completion before it notifies x / mesa of it. Instead it over-optimistically assumes that the swap completes at the very moment it is scheduled, which is almost never the case. -> Mesa would start to render to what it thinks is the post-swap backbuffer, but in reality it is the current pre-swap frontbuffer. Unless they have some other unorthodox synchronization mechanism in place to prevent that. You'd see many of the symptoms described here if i'm correct. And a pause of 30 msecs after each bufferswap as described would fix the issue in many cases. Iow, the ddx implementation isn't yet ready to do this properly for page-flipped fullscreen swaps, as they happen with video games and quite often with desktop compositor. You could try if adding the option "Pageflip" "off" in xorg.conf fixes the problems for now, until proper implementation is there. As far as i can see, the current ddx code has a few more issues there -- it does do stuff differently in some cases than how it is meant to be done for the dri2 swapbuffers and timestamping implementation. -mario -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug.