Well, it is a selection on the lower left of the sddm login screen.
I have nothing there.
>> Since you can get to a text terminal. Have you tried
creating another user and then
>> logging in as that user?
> just done it, same problem with the new user
>
Humm.....
I just tried multiple times again, still the blackout.
I also tried to use a different kernel but both 4.11.4 and 4.11.5 give
the same issue.
I have an nvidia card but I use the nouveau driver on this computer
(never installed the proprietary driver).
Regards,
Frédéric