> Did you check if the dm module is loaded? unfortunately not. Because I never need to manually load the module and automatic mounting of the cryptdisks partition during system boot did work correctly since I installed Kubuntu 5.10 past year. To be honest, in the meantime I found the correct module name for the required module (dm-crypt), the error message wasn't real helpfull.
After "modprobe dm-crypt" cryptdisks will start correctly. So the final question is, what happened that a manual module load is required and the automatic mounting during system boot doesn't work anymore after a kernel security update. -- Incompatible libdevmapper 1.01.03 and kernel driver https://launchpad.net/bugs/53475 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs