HD4000 graphics are working now. It could help others, so here is what I done :
- Clean Vanilla install of Mavericks
- Install latest Chameleon on hard drive, and put into org.chameleon.Boot.plist
- Boot with a proper DSDT for my laptop
Audio is working with the latest VoodooHDA kext (I just had to patch the device ID)
Webcam is working (but not in Photo Booth)
Ethernet is working
Wifi will probably never work
Trackpad and multimedia keys don't work well, I'm always looking for a fix (if someone has an idea).
Thanks to iFire for the help (don't know why it didn't work before, I did exactly what you said, I maybe broke some kexts)
I mark the problem solved, but if someone can help with trackpad and multimedia keys I would appreciate.