@DoiX - Have you read this thread?http://bbs.pcbeta.co...914788-1-1.html
It's about the l501x and is in Chinese, but there is some good information there, although it is a bit hard to decipher at times.. There is a kext there (ACPIBacklight) which could be helpful with the backlight issue (or it may not as it is slightly different hardware). I tried it on my setup, and it does load properly, but does not allow backlight control, however that could be due to the required DSDT modifications, which I couldn't seem to follow.. Perhaps you can?
There is also some information there about patching the 10.7.2 version of AppleHDA, which could be of some use?
I did manage to extract one very useful piece of information on there. The app 'antipop' stops the 'lag' and also the occasional popping that you get with the modified AppleHDA. it does this by preventing the audio device from sleeping, which is why the lag occurs after it has been idle for some time (over 15 seconds I think). It works well and i haven't noticed any other issues caused by it. Battery life still seems just as good, sleep works, and geekbench scores are just as high
Try it out here:https://rapidshare.c...tipop-1.0.2.dmg
Once again, thank you for all of you hard work and continued efforts!
EDIT - Damn, upon further inspection, it would appear that antipop does infact prevent sleep... Such a shame! Perhaps there is some way of forcing OSX to 'ignore' the antipop process, so that it doesn't prevent sleep?
It is much nicer to use, as all sounds occur at the time that they should, rather than after a small delay..