Got audio working. I forgot to update the DTST.

For info, I finally get working SpeedStep, no more KP in 10.7.4 For that I use the SSDT.aml from multi beast 4.5.2, the one for overclockeed i5/i7. The one for standard i5/i7 leads to KP. In the same time I selected "Patch AppleRTC.kext". I don't think this has contributed to solve the KP. But as I...

Hi Everyone, Very useful post, thank you very much. I have just installed LION on x220, same hardware as detailed in the first post excepted the proc speed 2,5GHz. Speedstep worked fine with 10.7 but despite of using all patched AppleIn...CPU... for 10.7.4, the one from the forum or the one from Mu...

Can you maybe try to explain the sound fix, how and where to install the Kexts for the updated new sound fix?

^So, what are some WiFi card that are compatible with the x220 (and mac and windows)?

I need some help clearing a few thing up. First, WiFi: If I use the whitelisted bios will the standard WiFi card that comes in the x220 work? If not what are some WiFi card that are compatible with the x220 (mac and windows)? Second, My trackpad doesn't seem to recognize physical clicking of it. It ...