I have the exact same issue on Feisty + Nvidia legacy driver + Xgl + Compiz
If I instead run Xorg + Metacity, the issue is gone. My workaround is CTRL+ALT+F1 to switch to a tty and do killall gksu. That returns the system into a responsive state and also opens the app I requested. Otherwise, if I wait long enough (a few minutes), gksu finishes and the app runs. -- With desktop effects enabled when using gksu system gets grey and only responds to keyboard https://bugs.launchpad.net/bugs/106008 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