Re: [Bug] X-server hangs when switch VDPAU video to fullscreen
This also happened to me and this is what i found:
KDE: desktop effects enabled BUT the option to disable them while on fullscreen is enabled by default. Is THIS change of effects enabled/disabled what made mplayer crash and freeze all the X server. When i disabled this option the problem was gone.
Yesterday i changed mplayer for mplayer2 and they have done a really good job because i've already enabled that option and i'm yet to see another crash.
So, for me,
solution 1: disable option to disable desktop effects on fullscreen windows
Solution 2: use mplayer2 instead of mplayer
I hope this help someone.