On Tue, Jun 15, 2010 at 04:43:46PM +0200, Giorgio wrote: > > Also works as-is with 195.something drivers on an NVidia 8800. > > Quick test: I installed Ubuntu 10.04 on a different hard disk on this > machine, and with nvidia proprietary drivers v. 173.14.22 I get the > same problem. > Since it works with other video cards/drivers, it must be something > related to my video card/setup. I somehow missed you actually sometimes see part of the video. I suspect that issue is something completely different from what I thought, MPlayer probably has a wrong idea about how large the Gui window is. Could you try running gmplayer -noconfig all -vo gl:yuv=2 maybe this only happens with some option?