Display flickers continuously
I'm running Fedora 28 with Mutter 3.28.3. I'm seeing a problem where my display will flicker continuously. I don't know how to exactly describe the problem, so I will attach a video that shows it. The flickering does not start right away, but starts after the screen has gone blank and I hit a key to wake it up. The flickering does not start EVERY time after a screen blank, but seems to have become more likely than not. I can usually tell it is going to happen when the screen takes a long time to come back on. If the screen comes back quickly, the flickering doesn't start. Once the flickering starts, the only way I've found to get rid of it is to log out and back in.