The solution at https://www.reddit.com/r/ZephyrusG14/comments/vqcqoy/screen_goes_black_and_doesnt_recover_when/ worked for me. I uninstalled Asus Calibration, and now all the problems my laptop was having went away. It has yet to be determined what problems removing it has caused, but so far everything is working.
Has anybody else had this problem? What did you do to fix it?