I am really helpless here - I can copy it (made a backup just in case) but cannot remove it…
I think I really have to get rid of it - it seems to create serious lagging after system boot. Which would make sense as it deviates a lot from the latest snapshots. It’s over 9 month old - the oldest snapshot in the list. The next one - the second oldest - is only 3 month old.
I’d be inclined to take a look at dmesg to see if there’s a hardware issue going on.
The other thing you can try doing is open a terminal window and then run sudo snapper list (to list the snapshots out) and then sudo snapper rm <n> where “” is the number of the snapshot you want to remove.
The console commands might provide more output - but you probably will need to run them as root unless you’ve specifically given your user the rights to manage snapshots.
I used a rollback to the state of yesterday and after the system was up running again I could use Yast to remove it just as every other snaphot - then I re-applied the package updates with zypper dup and the snapper list is showing with all the expected entries.
Obviously I am not as experinced as you are that’s why I have asked here.
I assumed that the error message thrown by Yast would would be a good starting point regarding this matter…
But for now I could solve it (see my other post if you are interested).