Only “nvidia” and “nvtop”.
I did just install “nvidia-settings”. Thanks for mentioning it, I had totally forgotten about it.
I did get bounced back to a login screen right after logging in today after a cold start, followed quickly by a black screen with a blinking cursor, so maybe there’s still some problem lurking. Nothing obvious in journalctl, and there was no powerdevil crash. Not sure what that’s about. Was able to login after rebooting.
EDIT:
Wild… sounds similar to this brand new thread: Black Screen with blinking cursor apears 30 seconds after the desktop loads