Laptop doesn't wake up from sleep (black screen)

[polle58]

I have an HP6540eb laptop, ML is installed on it and works fine, except if I put it into sleep it doesn't wake up, the screen stays black.

I chameleon I already tried with darkwake=no

specs of the laptop:

Processor 1,5 GHz Intel Core 2 Duo

Memory 2 GB 666 MHz DDR2 SDRAM

Graphics HP GeForce 8400M GS 128 MB

Software OS X 10.8.5 (12F37)

I use a custom dsdt,file attached.

Any idea?

DSDT.aml.zip