Hi Luke, First of all: don't worry, your device is not bricked. MOK (Machine- Owner Keys) is a mechanism that allows the user of a system to add his/her own secure keys in addition to the ones the machine already has. It is used by Ubuntu because Ubuntu may include additional stuff (the "3rd party drivers") that are not signed by the default security keys. Therefore, it is required to add other security keys to be able to install and enable these 3rd party drivers.
Did you try the latest version (Ubuntu 19.10)? Or only different 18.04 ISOs? Mathieu Trudel-Lapierre provided a fix (see comment #4) for grub2 (included in 2.04-1ubuntu6). According to the packages list [1], the version in 18.04 (bionic) is 2.02-2ubuntu8, so I don't think it includes the fix. [1] https://packages.ubuntu.com/bionic/grub2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1845466 Title: UEFI/Secureboot - "Failed to start MokManager" error when trying to install 3rd party drivers during install, leading to unbootable device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1845466/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
