I did the BIOS update (29 Jan 2021) but the issue remains even though slightly different. The screen is not black now but it get stuck on the LEGION + Ubuntu loading screen.
If I connect a 2nd screen (HDMI) I can see the login screen on the 2nd screen whilst builtin screen is black (but with backlight on).
I tried an apt-get dist-upgrade, I disabled Secure Boot in BIOS. No luck.
I am able to log into the machine via ssh.
What shall I do from here??
ps: I uninstalled nvidia drivers for now and the builtin screen came back. Obviously not what I want but I think it’s important info