Version: unspecified (using KDE 4.6.2) OS: Linux When playing a movie with mplayer, it blinks (turns black for a while) under two conditions: 1) the compositing is disabled 2) a bouncing cursor (displayed when an app is starting) is located in the mplayer window With compositing, it works just fine. Other players (e.g. dragon) work fine as well. Reproducible: Always Steps to Reproduce: - play a movie with mplayer - start an app (so that the bouncing icon is displayed) - move the mouse over the mplayer window Actual Results: The mplayer window blinks - instead of the movie, a black area is displayed repeatedly (about twice per second). Expected Results: No blinking. Not sure if it's related, but I'm using nvidia driver 275.09.07 (but I've tried to downgrade to 260.19.44 and it didn't help).
No kwin issue and probably won't "fix" either. The bouncing cursor thing is probably implemented as shaping or moving XWindow, at least it exposes the background what triggers a recall on the window, what fails on at least the useed mplayer sink. Possible solutions: - re-enable the backing store in Xorg.conf and hope that it's still implemented in the driver (if you do not use compositing, this makes sense anyway) - try another mplayer -vo (eg. gl "mplayer -vo "gl:noscaled-osd:osdcolor=0xaaffffff:rectangle=0:glfinish:swapinterval=1:yuv=2", you can add that to the mplayer config as well) - simply do not use the nasty blinking cursor thing ("application and system" / "launch feeback" in systemsettings)