Update: installed daily x64 daily 12.10 build, but issues with shutdown and reboot persisted. However, after downgrading to 32-bit version of 12.04, all issues appear to be resolved. I'm satisfied with this arrangement, although I'm still puzzled as to why the 64-bit install was so error prone, despite my laptop's architecture supporting it.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1010981 Title: Computer does not power off when attempting to shut down by any route. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1010981/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs