Thread: Black screen in 10.6 causes my PC to lock up

Hello,

I've been using Snow Leopard 10.6.2 for a few weeks now on my former EFI-X machine.
Everything works great and it's very fast, but I'm experiencing a very annoying bug.

Randomly the screen turns black and my computer freezes. I need to hard reboot the computer and then everything seems to be okay again. I actually do think it has to do with my USB-ports, because it happens either when I randomly plug any USB-device to my PC, move my Magic Mouse/ type something with my Wireless Keyboard (both are controlled by a USB-bluetooth stick) or when I'm listening to music through my cheap USB-soundcard. I might add that this didn't happen back when I was using OSX 10.5.

Does anyone experienced something similar and what could be the cause? Do I maybe need an USB fix for 10.6? I tried searching Google with no success. I did read something about the black screen problem appearing when booting, but I'm not sure if it has something to do with it.

My system:
Gigabyte GA-EP45-DS3R (With F11e bios + DSDT.aml for EP45-DS3R)
Intel Core 2 Duo E8500 @ 3,16 GHz
8GB DDRII 800MHz
OSX 10.6.2 running through Chameleon RC4 installed on a USB-stick. (It did do this back on Chameleon RC3)

I hope you can help me out on this one =) Many thanks!

What kexts do you use? That info might help.

Hi,

I'm using the following kexts from AsereBLN's Chameleon package on my USB-stick:

CPUInjector.kext
fakesmc.kext
NullCPUPowerManagement.kext
OpenHaltRestart.kext
PlatformUUID.kext

I used to have LegacyHDA.kext installed on my Macintosh HD, but I removed it since I'm using a better soundcard and thus I'm not in the need anymore of the onboard sound. I do have a Realtek R1000 kext for Snow Leopard installed on my HD in System/Library/Extensions.

Well that looks OK, if fakesmc is the latest version from Netkas (2.5). I would try removing NullCPUPower, and if the install from Asere is his new one with the UUID fix, I would remove PlatformUUID. Not having LegacyHDA shouldn't cause a problem. Have you booted in verbose mode to find out where things fail? When your boot drive shows up in Chameleon, click the down arrow to the Boot in verbose selection.