I'm seeing this same exact issue on my MBPr13. Occasionally I'll wake the laptop and it will show gray garbage on the screen, so I'm suspecting some kind of vid

I'm seeing this same exact issue on my MBPr13. Occasionally I'll wake the laptop and it will show gray garbage on the screen, so I'm suspecting some kind of video issue / interaction with scrolling in Safari. It really got bad with the 10.10.2 beta, so I'm hoping they fix it with a point release.