https://bugs.freedesktop.org/show_bug.cgi?id=109298
--- Comment #2 from tkdestroyer2+bugs-freedesktop@gmail.com --- (In reply to Michel Dänzer from comment #1)
Does not specifying the dpm parameter at all on the kernel command line or anywhere else make a difference?
I just tested. DPM is required to prevent crashing, but DC is not.