Yup - and I can see where there is a problem! You mentioned Gnome - did you allow it to default to Wayland, or did you select an X session when logging in? If that is involved in your difficulties, it might let you work on the system while fixing it!
Never done that - didn’t think of that! Could be a problem I suspect that it IS dropping you into Wayland by default then, but I don’t know enough about how to bypass it. The long way is to reinstall WITHOUT the autologin, but that may not be necessary…
I hope someone who knows more (especially about nVidia!) drops by - all I know is what I have ‘heard’ about Wayland/nVidia interaction - mostly here. Do any of the console access keys work to induce visibility? Such as CTRLALTF3 for a full screen console… (F7 or possibly F1 with CTRL-ALT to return to the graphics). That might give you ‘access’ to allow recovery operations…
the problem is limitations with xorg or wayland. What resolution do you have it set for? I know nothing of wayland and the issues i have had with Nvidia I have been able to fix after a few days of hair pulling. Also you want to make sure of what driver is being used nvidia or novea in a tty try the command nvidia-settings also check if you have nvidia-dkms and nvidia-inst. but make sure your using nvidia drivers.
I booted to console as suggested by pebcak, then started nvidia-inst which reported this error message:
pcilib error reading sys/bus/pci/devices/0000:00:08.3/label: operation not permitted
nvdia card id 25e2
it then asked for my password and installed the driver. However when I rebooted the desktop was corrupted as before.
Out of curiosity I booted the live iso, first with the default option (I only saw the mouse cursor but the screen was black), then with the nvidia option (display was ok). Is there a way to achieve the same result on my gnome desktop?