Comment 17 for bug 1724911

edc2988c548db05e33b921fed15821010bc74895 is bad, though the symptoms are different. (no output on the external monitor from plymouth; plymouth itself seems to crash and the VT is in text mode, so text input results in characters being shown in the upper lefthand corner over the plymouth background; since plymouth isn't accepting input, I'm not able to boot all the way to userspace and check whether the text VTs are accessible after X or wayland has started, since with plymouth broken the root disk does not unlock.)