Hello,

I've recently did a fresh vanilla install of Snow leopard, was running snow leopard server before, and now everything works as a charm except when i connect my secondary display everything hangs. I get a black screen on my secondary display and on my main monitor everything just freezes. Searched for this everywhere but no answer.

Spec:
Gigabyte P35-DS3R
4gb ram
nvidia 9800gtx+ 512mb
Intel q6600 quad core

Most of the fixes is done via DSDT, I've tried creating a DSDT without GFX and letting Chameleon graphicsenabler do the work, same problem. The only kexts i have in Extra is:
Disabler.kext
fakesmc.kext
LegacyHDA.kext
OpenHaltRestart.kext
PlatformUUID.kext

Suggestions anyone? Just tell me if you need logs or screenshots.It seems in console that Windowserver has some kind of a problem.

//Best regards Linus

Try creating an EFI string and inserting that into the com.apple.boot.plist

I am thinking you missed the thread below and there is a good chance that second monitor is connected via HDMI cable.

http://www.insanelymac.com/forum/index.php?showtopic=196878

Thank you, this solved my problem. Had to go back to 10.6.1 kexts forNVDANV40Hal.kext , NVDANV50Hal.kext and
NVDAResman.kext