Weird graphical bug

[andymac2210]

This has started happening a lot lately, I'm positive it's a software bug because logging out/in solves it.


The graphical glitch

After logging out/in - back to normal

Oh and this one too.

 

[xtremesniper]

Same issue here: https://forums.macrumors.com/threads/1260763/

It has to do with external graphics cards and the Nvidia 320/330M.

I believe it is a driver glitch.