Mac Wake Up Screen Glitch
When I wake up my mac from sleep, the screen glitches and displays static, but it's only a flash (0.5 seconds). I've seen posts about this happening in macbook pro as well, after we've updated to High Sierra. I've seen examples about screens with weird colors, but in my case is just a greyish static. This lasts for only a few seconds.
MacBook Air, High Sierra Version 10.13.4