I have the same issue with a fresh install of kubuntu 22.04 LTS on an HP 820 G1. Random screen blackout -- machine can only be revived by a reboot. The Windows operating system that was replaced by kubuntu worked flawlessly (except that it was Windows, which is one hell of a flaw).
I have the same issue with a fresh install of kubuntu 22.04 LTS on an HP 820 G1. Random screen blackout -- machine can only be revived by a reboot. The Windows operating system that was replaced by kubuntu worked flawlessly (except that it was Windows, which is one hell of a flaw).