First time I put Ubuntu on a laptop (2004 or so), there was an intel graphics regression so bad, I put windows back on it... This past October was the first time, in a very long time, Linux went on as my main OS. And running a new x570 board with an rx 5700xt has been painful until much later, when support got dramatically better.
Still have an issue with when I come back from the blank screen and login, the login screen won't go away... all the top/side bar shows, but it covers apps... I wind up ctrl+alt=f3 to login to a terminal and reboot. Should really figure out the commands to kill and restart gnome, but it's really been a pain. not sure if KDE might be better.
(sudo) pkill Xorg should likely do the trick, but check e.g. htop (hit F5 to get a tree view) for the name of the root process of the graphics session.
Still have an issue with when I come back from the blank screen and login, the login screen won't go away... all the top/side bar shows, but it covers apps... I wind up ctrl+alt=f3 to login to a terminal and reboot. Should really figure out the commands to kill and restart gnome, but it's really been a pain. not sure if KDE might be better.