From Lion to Snow Leopard on Macbook Air

Question

From Lion to Snow Leopard on Macbook Air

I successfully reverted from Lion to Snow Leopard on 2 recently bought iMacs, and I am very happy with this.

I had some problems doing the same with my new Macbook Air, but I still managed (using Carbon Copy Cloner to clone the iMac system onto the Macbook Air using a Thunderbolt cable). I am now facing the obvious problems with drivers...

My Macbook Air has Intel HD 3000 Graphics and, while Lion had a driver for it, it appears that Snow Leopard doesn't (or at least not 100% perfect as I am having some problems -- slow response, screen freezing...). I tried the obvious copying from

/System/Library/Extensions

the Lion drivers (AppleIntelHD3000Graphics.kext, AppleIntelHD3000GraphicsGA.plugin, AppleIntelHD3000GraphicsGLDriver.bundle, AppleIntelHD3000GraphicsVADriver.bundle)

onto

/System/Library/Extensions

in Snow Leopard. Obviously it does not work, but I would very much appreciate tips on how to install such driver files.

Also, the trackpad does not seem to be recognized at all, so system preferences does not see it. Fortunately I can still use it and main-click, but any other multifinger funtionality is disabled. Again, I suppose this is a driver problem, but in this case, I do not even know which one it is.

Posted on Jun 12, 2012 11:21 AM

Reply

Answer 1

Jun 12, 2012 12:17 PM in response to albert_guillen

You more or less have the driver installation procedure down - just copy the files.

The problem really is that there's no driver for that video card for that version of OS X. Drivers are compiled against specific major versions of the OS X kernel. A driver bundle may contain multiple versions of the driver, each for a specific OS X version.

As far as I know, you don't really have a solution for this other than to write your own display driver kext.

Reply