The Asus K52Jc laptop DSDT contains a method called:
\_SB.PCI0.PEG1.GFX0.DOFF
You can quite possibly use the lenovo_acpi module and substitute the default method for the one in your DSDT:
http://github.com/doudou/lenovo_acpi
\_SB.PCI0.PEG1.GFX0.DOFF
You can quite possibly use the lenovo_acpi module and substitute the default method for the one in your DSDT:
http://github.com/doudou/lenovo_acpi