Hi,
I've looked around for a solution to the brightness issue I have on Mountain Lion. The problems I have are that there is no way of controlling the brightness, either with the fn keys or the slider in the Display prefpane (in System preferences).
I have read that there needs to be a PNLF device in the DSDT and it needs to be put before another device, but I can't find that in my DSDT either.
Could someone please help me locate where and how to enter this device in my DSDT?
Would I use the following patch (found in various forums)?
Device (PNLF)
{
Name (_HID, EisaId ("APP0002"))
Name (_CID, "backlight")
Name (_UID, 0x0A)
Name (_STA, 0x0B)
}
Many thanks for your help - because of this site, I have been able to create and edit my DSDT with the pre-made patches and almost have a fully working Mac
Rich.
My Specs:
Sony Vaio VPCEH2n1e
i5 2450 2.4GHz
Mountain Lion