Thinkpads Forum

Hey guys,

I'm using X220, and just installed Mavericks following this thread http://forum.thinkpads.com/viewtopic.php?f=32&t=112210

After that, I tried to make VGA work.
Since I'm not familiar to Hackintosh, so just installed a modified AppleIntelSNBGraphicsFB.kext by KextBeast.
http://www.mediafire.com/download/6ui76 ... B.kext.zip
I downloaded several versions of it, now I couldn't be sure about from where did I download this file .

Mavericks did detect the external monitor with 1920x1200, but obviously it's outputting at a wrong resolution.

Built-in Display
http://i.imgur.com/1Ll817I.png

External Monitor
http://i.imgur.com/9OyAdC2.png

My external monitor resolution is 1920x1200, but the actual resolution it's outputting is 1600x1200
And the screen seems to be incorrect(cropped on left side), see the photo below
http://i.imgur.com/7l24kxg.jpg

ps. this resolution works fine on Windows

Any ideas to fix this?

Moderator edit: as per Forum Rules, NO pictures over 50KB, changed them to links.

So finally I noticed the problem is due to the Mac OS itself. It can't support VGA output at high resolution, like 1920x1200.

I bought a DisplayPort-to-HDMI cable, and modified the AppleIntelSNBGraphicsFB.kext file according to http://forum.osxlatitude.com/index.php ... d3000-gpu/
and set value 02 05 00 00 00 08 00 00 06 00 00 for DisplayPort output. Now it works at 1920x1200 resolution.