Before downgrading to 8.10 I took last attempt and tried a recipe from Chinese Ubuntu forums and they worked (via Google translator). I did not read any instructions which is not a good idea.
Note: the below commands can do whatever damage to your computer and I cannot take any responsibility of what happens. Do your own study properly (unlike me). Adding things to your source.list and new gpg keys contain always serious risk.
Here's the catch from the thread:
- Add following lines to the end of /etc/apt/sources.list
- deb http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu jaunty main
- deb-src http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu jaunty main
Update: Compiz does not work so it seems that the acceleration is only limited, but the quality problems disappeared anyway. Update2: now Compiz works again, the solution is probably not the most stable.