I’ve created a LUKS encrypted disk while running Kernel 5.12.
Then I upgraded and tried to mount it on Kernel 5.13.
The errors I got from Dolphin and KDE Partition manager were cryptic.
So I tried commandline and got this:
# cryptsetup luksOpen /dev/sdc1 stuff Enter passphrase for /dev/sdc1: Cannot initialize device-mapper. Is dm_mod kernel module loaded? Cannot use device stuff, name is invalid or still in use.
The device mapper kernel module is indeed nowhere to be found.
I reinstalled device mapper and LUKS to no avail.
I have Linux-5.13 headers installed so I think the modules should be built and installed.
What can I do (except from switching back to Kernel 5.12)?