Crazy display artifacts when multiple displays are connected

[tasslehawf]

Just installed Mavericks on my wife's computer (2012 non-retina MBP). She has an external Dell display connected over mDP to DVI. When it's connected it gets this crazy artifact thingy. Anyone seen this?

It does it on both displays equally, but goes away when the exernal display is disconnected.

EDIT: The is happening anytime the machine is using the discreet graphics chip. I tried a clean install and it even did it during the installation.

 

[TD912]

Seems like there's a bunch of weird graphics artifact glitches happening with 10.9.

There's another post about something similar here, but without an external monitor connected: https://forums.macrumors.com/threads/1658731/

 

[tasslehawf]

The external display is connected with a mini Display Port to DVI cable. I also tested it with my Apple miniDP to DVI adaptor.

The craziest thing is it does it over airplay with our Apple TV.

 

[tasslehawf]

I've determined the issue is with the discrete graphics chip: the Geforce GT 650M.

 

[Bitgod]

Don't know if related, I was using my Mini with my TV after installing Mavs. I fired up VNC off my ipad to make sure it could log in ok, after I logged out I noticed some weird graphical glitches on my TV screen around the dock and the top of the app store window. Shrug. Haven't seen it since at this point.