I have successfully installed ML 10.8.5 on a HP laptop, using ##### usb, + ##### easy install + adding kexts for laptop keyboard and mouse, fakesmc kext with plugins, ssdt for i5, and patched appleintelcpupowermangement.kext.
I tried to investigate doing it with a dsdt, but did not have any luck getting anywhere in terms of patch's, and not entirely sure (yet) how to create it from scratch
graphics full QE/CI
keyboard and mouse
onboard network (though i did notice it dropping my network drives and reconnecting, which requires more looking into)
fn keys work apart from brightness
what doesn't work
Sound (but im pretty sure i can fix this, just have not got round to it yet)
Wifi, probably will need a new card, though i will be using it as a desktop, so not so important
Sleep, which is the annoying issue, It goes to sleep, but only for a second or two, and then wakes up again, in the console.app it either gives "usb Hub" which must be referring to an internal hub (logic board) or ethernet, as the reasons, I have disabled the ethernet for now, but it makes no difference.
Does anyone have any ideas as to why sleep might be waking up straight away, any common causes?