For a few years I've had this issue on Linux only. When turning on/off lams in the apartment, or plugging in/out a USB the screens sometimes go completely black, ie the driver crashed. Sounds still come from the speakers. Only fix is to hard reboot. Sometimes its enough to just touch a random cable
Have switched the PSU, have bought 2x power surge protectors at no avail.
I guess it must be an issue with the AMD Vega 56 or its corresponding driver. Have reinstalled and tried several driver versions over the years, but always the same problem.
Google tells me there are others with issues that the screen goes black and driver crash, but none that mention in situations like mine - powering random stuff on/off.
Any help is much appreciated.
Note. Just switched one of my monitors to a much larger one, and the problem is now more frequent than previously