@John,
Thanks again for keeping us moving. To the best of my ability/understanding, your theories are sound to me, FWIW! Here's some more info, as requested:
(a) My /var/run/gdm/firstserver.stamp does have a time matching my most recent boot.
(b) I searched all of my /var/log/Xorg.* files for "no screens found" and found 7 files with this string--attached.
@John,
Thanks again for keeping us moving. To the best of my ability/ understanding, your theories are sound to me, FWIW! Here's some more info, as requested:
(a) My /var/run/ gdm/firstserver .stamp does have a time matching my most recent boot.
(b) I searched all of my /var/log/Xorg.* files for "no screens found" and found 7 files with this string--attached.