Your Ubuntu version is EOL. Can you please tell us if this still happens under a supported Ubuntu version? Thank you!
** Changed in: acpi (Ubuntu) Status: Confirmed => Incomplete ** Summary changed: - [Gusty/ Heron Development] system crashes on ac power unless acpi=off, but runs on battery + ystem crashes on ac power unless acpi=off, but runs on battery ** Summary changed: - ystem crashes on ac power unless acpi=off, but runs on battery + System crashes on ac power unless acpi=off, but runs on battery -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/148637 Title: System crashes on ac power unless acpi=off, but runs on battery To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/acpi/+bug/148637/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs