OK, well, today I upgraded to Ubuntu 10.04 (Lucid). Kernel 2.6.32-22 generic. The problem is gone. The computer powers off on shutdown normally. Go figure. I just report the facts.
-- unable to power off with kernel 2.6.31-21 generic https://bugs.launchpad.net/bugs/551121 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs