A week ago I installed the latest Manjaro on a friend’s Lenovo V15 ADA AMD 3020E with an integrated GPU.
I have no access to that machine and she is not computer literate.
She has just reported that sometimes a black screen shows up in lieu of the login screen.
Such screen is typically responsive to CTRL + ALT + F3 from where she can startx manually most of the time (some red error messages may show up). But typically she is just able to login upon reboot.
The problem is more serious when she closes the lid. Then, the computer does not properly wake up after suspend and the black screen does not seem to be responsive to any key combination.
Again, reboot seems to solve the problem most of the times.