Black unresponsive screen after leaving the computer on its own unsuspended for a couple hours

I have a ryzen 1600, MSI B450 Tomahawk motherboard, RX 580 4GB and am using Kubuntu 19.04. My only power setting is the default that the screen will turn off after 10 minutes but never suspend. If I leave it for a couple hours I will come back and just not be able to turn the screen back on even though the power light is still on and the fans are still on normally. It’s kind of frustrating if I leave something I’m working on to go do something else and come back and have to hard reset the PC.