Hi Newbie,
I have same notebook Dell E6420 with HD3000 graphics, but with display resolution 1600x900.
I try your Extra folder but without success than I have question. Which BIOS version you have?
Do you do some changes on /System/Library/Extensions?
I want prepare my installation step by step process but I still have some problems which I want resolve.
For example: Volume Up and Down on keys F11 and F12 not working, I must go to Settings / VoodooHDA pane.
Most important problem for me is, that battery don't show capacity and system don't see battery.
Could somebody help?
Thank you
//DALDA