Same problem on Lenovo ThinkPad E540. Chris, could you please explain in more detail how did you downgraded efibootmgr? I wasn't able to find that version 0.5.4-7ubuntu1.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1387654 Title: installing or upgrading to Ubuntu 14.10 kills Boot Manager on ThinkPad W540 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1387654/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs