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Multiple display problem in OSX 10.9.2

I just updated to 10.9.2 on my 15" Macbook Pro (Mid-2010) and after the restart my secondary display will not work. When I plug it in to my mini displayport my secondary display comes up black and my primary display comes back with the background and settings that I had set for my secondary display. It seems as though the OS was confusing my primary display for my secondary. After messing with the settings I was able to get my primary display back to my primary settings, but the secondary display is still showing up black no matter how much I mess with the display settings in the system preferences (changes to resolution, mirroring, ect.). Anyone else experiencing this?

MacBook Pro (15-inch Mid 2010)

Posted on Feb 25, 2014 1:00 PM

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Posted on Feb 25, 2014 1:14 PM

Nearly the same here. I've an external display connected to my private iMac via mini displayport respectively two external thunderbolt displays connected to my iMac for work. Before the update to 10.9.2 everything worked fine, afterwards the screen turns from black to the normal display to black and so on, it's flickering every time I do something, open up an app, repositioning a window from one display to another, switch to fullscreen. This totally *****, as an Developer and UI designer I'm depend on two respectively three displays o.O

135 replies

Mar 19, 2014 10:02 AM in response to tbartoncv

Also, out of curiosity, what was the 5th kext you loaded? I'm only seeing these 4 from your screenshot:


  • AMD7000Controller.kext
  • AMDFrameBuffer.kext
  • AMDRadeonX4000.kext
  • AMDSupport.kext


I tried replacing those 4 with the version (1.16.39) I extracted from apple's OSX 10.9.1 mac pro updater PKG but it simply caused osx to fail to advance to the login screen (instead it showed me some noisy junk framebuffer). Bummer!


Also, amaga's files seem to be version 1.14.21, which I'm hesitant to try since my other attempt failed.

Mar 20, 2014 1:08 AM in response to leifdalan

Hi Guys.

MBP 8.1 and displayPort -> VGA doesn't work, DVI does – but unfortunately I don't have display with this input. So I'm trying to do everthing including PRAM & SMC reset, but no results.

The last option is amaga solution. I don't have any backups so i wanna ask you guys, can anyone can share file for intel graphic extensions.

In extension directory i have 4 file which was changed after update to 10.9.2.

- IOGraphicsFamily.kext

- IONDRVSupport.kext

- IOPCIFamily.kext

- System.kext

Thanks.

Multiple display problem in OSX 10.9.2

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