Bug#1039559: lightdm does not start Xorg

[Christophe Lohr <christophe.lohr@cegetel.net>]

Le 04/07/2023 à 10:09, Yves-Alexis Perez a écrit :
> Is
> xserver-xorg-video-nouveau package installed? If not, can you install it
> just to check if it does fix the problem (by not using fbdev)?

Bingo! You're right!
(Well, you're right all along actually... sorry for the inconvenience)

Actually, my Xorg used 'fbdev' instead of 'nouveau' because the 'nouveau 
kernel driver' was blacklisted for loading at boot,
probably due to some remnants of a past attempt with nvidia...

Now, lightdm reworks well!

(well, there are still questions on using lightdm with fbdev, but I 
leave this to experts ;-) )

Thank you for everything.
Best regards
Christophe