Ok it seems to resolve the problems with xserver-xorg-video-intel 2:2.13.901-2ubuntu2~xup~maverick.
But note that with bleeding edge intel-driver from ppa:glasen/intel-driver (2:2.14~glasen~maverick~ppa6), there is still graphics problem with emacs : the cursor takes the shape of the letters (with 'space' character the cursor disappear) !? (and have other refresh problems) And when I disable compositing effects, this problem disappear. I hope this bug will not reappear on a future stable release. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/661910 Title: Kwin compositing problem on maverick -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs