I'm using ubuntu 11.10 as my HTPC OS on ION board. Tearing was always a big problem but this guide (http://www.omgubuntu.co.uk/2010/01/how-to-fix-video-tearing-in-videos-nvidia-ubuntu/) used to solve it in previous versions. I mean it used to because it doesn't solve it anymore.
I tried making same changes (although compiz config is little different and same options are in different panels) but with no success. I also tried to manually set resolution and refresh rate of HDTV in nvidia settings - no changes at all.
I know that open source drivers would solve a problem but it's not an option because I need VDPAU acceleration.
I've also read that completely disabling of Composite solves the problem - can't do that because compizconfig-settings-manager crashes on attempt.
More info about setup:
- Ubuntu 11.10 64bit
- Nvidia ION board
- newest official version of proprietary driver
- SMplayer with vdpau settings
- Full HD HDTV