Comment # 189 on bug 91880 from tkdestroyer2+bugs-freedesktop@gmail.com

I tried what chris suggested, and it worked up until the point at which some X
session closes (right after login or after exiting basic xterm test session),
where the system locks up. They seem to have patched 4.16.*, which was totally
broken before for me on 4.16.2. I guess I'll keep doing my dpm=0 thing for now.