The real issue is caused by efibootmgr which destroyes the nvram. It has to be fixed
** Package changed: linux (Ubuntu) => efibootmgr (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1082418 Title: [Fujitsu Lifebook AH532] UEFI firmware locks itself after installing Ubuntu in UEFI mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/efibootmgr/+bug/1082418/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs