Failed system update with REISUB afterwards lead to boot problem

[Zesko]

Are you using Timeshift? That creates writable snapshots by default, not read-only snapshot.

The issue is:

@Christling

I was able to work around the boot error by taking a BTRFS snapshot from the grub boot menu. (Thanks for that!!)

Updating again via the package manager, which looked successful, on reboot not only did not fix the error, but the snapshot now showed the same kernel/boot error. Each time I had to go back one snapshot further. The default boot entry is still not working.

After booting into your selected writable snapshot, if you ran the system update using update-grub to overwrite the good snapshot, then you have to boot into the same snapshot after every reboot.

For example:

How do I use Timeshift/btrfs to permanently restore to a previous snapshot?

I’ve been using Manjaro for a couple years now. When I did a reinstall with btrfs I was pleasantly surprised to see how Timeshift and grub-mkconfig was all automatically configured to boot to any previous snapshots created. I tested booting to previous snapshots, and it worked flawlessly! And it just felt great that it was there if I ever needed it. Unfortunately, I now need it. What I didn’t test, is the restore feature of Timeshift. When I do the restore, upon reboot I get a warning from Time…