Thinkpad x240 restarts after disk encryption password entered

I see you are using the email method here, so you probably do not see the edits to my posts. In that case, I will repeat what I edited into the post above here:

P. P. S. This forum thread may also prove to be instructive if the problem is with a failed dom0 update breaking initramfs and resulting in a kernel panic.

Regards,
John