Not long ago I encountered a problem after updating Fedora, after switching and then exiting standby mode, the brightness does not drop below 71%
When you restart the system, the problem is solved, but when you go into sleep mode again, the problem with brightness appears again
I decided to reinstall the system to a clean one, after the reinstallation the problem was solved, then an official system update came (not a beta version) and after the update the problem returned