Comment # 43 on bug 1169783 from Jacob W

I had this issue too, but my setup is more standard and oddly enough, I had it
*much* worse than others. I only have /home encrypted via LUKS. Paritions are
standard for TW (meaning / is btrfs with default TW setup).

So while I could not get the password prompt to work at all, even if disabling
plymouth via grub, I also had the "pleasure" of having all my snapshots
removed! I could not rollback because all snapshots disappeared from grub and
from /.snapshots in recovery mode.

After much cursing (which helps a lot in these types of situations & I highly
recommend it), many reboots and trial and error, including editing crypttab
because the man page has wrong info re the password entry, by some miracle, I
finally got my snapshots to show up in grub again. I took no further risks, and
immedietly proceeding to rollback, locked every package that has anything to do
with plymouth, and zypper dup again. Now my system works fine.

I hate plymouth with a passion. Years ago I had a similar situation but without
the disappearing snapshots (I reported a bug, but plymouth maintainer decided
to ignore it after some time).

There was talk awhile back of removing plymouth from openSUSE. This needs to be
done, not just talked about.

I'm most definitely not risking more horrors & decided not to "retry" to get
logs.