Not really; the error not showing up is because the firmware doesn't report an error, but even if it did we can't necessarily tell the user anything from it anyway (it might not be breaking because of Boot Order Lock).
Fallback is a "new" feature to fix other systems that don't remember how to boot across reboots... Closing as "Invalid": this is effectively a support request, where firmware configuration caused fallback to fail. ** Changed in: shim (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1750351 Title: (Thinkpad T470) Boot loop after update To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1750351/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs