Same problem here. HP Pavilion Elite HPE-515sc.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02881663&tmp_task=prodinfoCategory&cc=us&dlc=en&lc=en&product=5142754 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/991977 Title: Ubuntu 12.04 hangs on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/991977/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs