the same happens with ATI r200 based chips. According to debian bug 456780 it could be a EXA RENDER acceleration bug in the intel&ati driver, or a bug in EXA itself.
** Bug watch added: Debian Bug tracker #456780 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=456780 ** Also affects: xserver-xorg-video-ati (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=456780 Importance: Unknown Status: Unknown -- [hardy] Enabling "Normal" effects produces badly drawn window shadows. https://bugs.launchpad.net/bugs/175774 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs