Paolo Amoroso, as per http://www.asus.com/Motherboards/P7P55M/#support_Download_8 an update is available for your BIOS (1101). If you update to this, does it change anything?
If not, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date Thank you for your understanding. ** Tags added: bios-outdated-1101 needs-upstream-testing regression- release ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1176513 Title: Shutdown doesn’t turn the PC off To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1176513/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs