I also had this problem but an update of compiz recently fixed the problem.
Are you by any chance using the "ati" open source driver? I found that when this was happening and I ran compiz from the command line I got a message saying something like "blacklisted driver 'ati' ". This went away after the latest updates. ** Changed in: compiz (Ubuntu) Sourcepackagename: None => compiz -- gutsy compiz desktop effects could not be enabled https://bugs.launchpad.net/bugs/139475 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
