This was actually fixed a few days after reporting. The issue was a missing workaround distro patch for fglrx compiz detection. ATI promised to fix this in the driver soon, so that the workaround won't be necessary anymore - for now, the fix works and everything is fine.
** Changed in: compiz (Ubuntu) Status: Incomplete => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/928248 Title: Major graphical artifacts in unity using latest rc compiz build on fglrx To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/928248/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs