I've fixed the problem I had - at least I think so. After an extremely frustrating day with an unusable machine (dual-processor, Acer desktop).
System / Preferences / CompizConfig Settings Manager / OpenGL and then un-tick "Sync To VBlank". My machine came back to life. What a relief. Dominik -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/740126 Title: Something blocks compiz randomly several times per day -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs