This error is common when another compositing manager is running (e.g. kompmgr) - only one compositor can be active at a time.
If using KDE, try disabling "shadows and transparency" in kcontrol; also make sure the kompmgr process isn't running. If this is it, maybe we need $something in beryl-kubuntu to disable KDE's compositing effects by default? Comments? -- beryl crash on "feisty" https://launchpad.net/bugs/96401 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
