After getting my hands on some real hardware, I was able to properly reproduce this, hunt down the problem, and get a fix.
Uploading nowish, and the fix should be included in 20180719. Later today I'll play with getting Secure Boot working. Thanks for all your help Nio, it's very much appreciated. :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1781015 Title: Calamares fails in UEFI mode after external command in Lubuntu Cosmic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calamares-settings-ubuntu/+bug/1781015/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs