Ordinary PC, 5700 XT. Just updated the drivers in case that was the issue.
When I wake the PC from sleep, the screen displays normally for a split second, then goes black for a moment, then the whole screen fills with what looks like static for a split second, then the screen displays normally.
It started doing this about a month ago. Not sure what changed. As I said, as far as I know, I've got the current drivers installed.
Once the screen displays normally, it's fine as it's always been, but it's a bit disconcerting to have it flashing around, showing static and such before it displays normally.