A little help for these trying to get Lion working on Aspire 5920 laptops(may help other lappy owners)

The best way to install is to use Carbon Copy Cloner and clone your installed desktop lion to lappy’s hdd partition.

then you need:

1. Use included IOPCIFamily.kext and also appleacpiplatform.kext, applehda.kext from Snowleopard 10.6.0/10.6.1 (10.6.2-10.6.6 may work too), so this will fix freeze durring boot up and fix wifi/ethernet
2. Use various kexts to get keyboard/touchpad/audio working, they all included in archive. For easy maintaining I placed them all in one pseudo-kext container Extra.kext, kexts are inside it in Plugins directory
3. patch applertc.kext with this script:
   
   sudo perl -pi -e 's|\x75\x30\x44\x89\xf8|\xeb\x30\x44\x89\xf8|; s|\x75\x3d\x8b\x75\x08|\xeb\x3d\x8b\x75\x08|' /System/Library/Extensions/AppleRTC.kext/Contents/MacOS/AppleRTC
4. use boot.plist and smbios.plist from archive.

So, what works: keyboard, touchpad, video, audio(speaker, builtin mic, headphones), wifi(I replaced intel wifi with broadcom’s one), bluetooth, reboot, cpu powermanagement(ssdt tables for T8300 included), cpu/gpu temperature sensors, card reader.

What doesn’t work: ethernet (you will need a special kext for it), sleep (lappy goes to sleep and wakes up immediately, need to fix usbehci, then it works), updates will be tricky (you will need to replace three kexts I mentioned in 1. ), video camera (use camtwist), 64-bit kernel mode(64-bit apps work fine).

Get files here.

p.s. Cham-rc5 booter I used is included too, just in case.