Lenovo T420 DSDT Help

[hampel]

Hi everyone,

 

I am having some trouble to patch my own Vanilla DSDT to get a working audio device. I downloaded a DSDT for a Lenovo T420 provided by manwe150 witch works fine for audio with patched applehda.kext.

Now when I try to add the Methods from manwe150's DSDT into my own, the audio device won't show up in device manager no more.

Since I don't have any experience with patching DSDT I don't now where to start looking. I am using DSDTSE right now to compile my DSDT.aml,

Please find attached 2 DSDT files one with working audio, one without.

dsdt_working_audio.aml.zip

dsdt.aml.zip

[hampel]

Hi there,

 

figured out what the problem was...

I was missing the IRQNoFlags

of

Name (BUF0, ResourceTemplate ()
			    {
				    IRQNoFlags ()
					    {0}
				    IRQNoFlags ()
					    {8}
				    IRQNoFlags ()
					    {11}
				    IRQNoFlags ()
					    {15}
				    Memory32Fixed (ReadOnly,
					    0xFED00000,		 // Address Base
					    0x00000400,		 // Address Length
					    )
			    })

in the HPET Device :-)