Same problem described in duplicate bug #332772. Also there is workaround and an interesting screenshot, so may be it will help to fix it.
checkout here: https://bugs.launchpad.net/ubuntu/+source/usplash/+bug/332772 ** Changed in: usplash (Ubuntu) Status: New => Confirmed -- HP desktop won't power off on shutdown https://bugs.launchpad.net/bugs/326988 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
