I used do-release-upgrade many times in over a decade of using Ubuntu. This is the first time this happened. In the middle of the upgrade a (white screen of death?) message showed up:
Oh no! Something has gone wrong. A problem has occurred and the system can't recover. Please contact a system administrator.
What happened? Is there any way to resolve this or prevent this from happening?
I can't access the system or the upgrade messages after the error came out. (Good thing BTRFS+Timeshift+timeshift-autosnap-apt+grub-btrfs saved me. I guess this stack should be considered part of a default Ubuntu install.)
I know, LTS are supposed to be upgraded on the first point release. And this is release day one. I'm excited, that's why.
Looks like a beta-version bug was reported here for the same issue. I'm on an official release though, not beta. (Today is release day. 🥳) So this should have supposedly been ironed out before the release?
More digs on the error: Mutter, systemd-resolved?