upgraded kernel to 2.6.38-9-generic #43pre201105250907 and found that shutdown/reboot and halt work from the command line and also from the menu options.
pcanham@flippy:~$ uname -a Linux flippy 2.6.38-9-generic #43pre201105250907-Ubuntu SMP Wed May 25 10:21:18 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/762203 Title: Computer is not turned off at shutdown -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs