Re: hda-intel module hanging if ACPI enabled

[Matt Porter <mporter@embeddedalley.com>]

On Thu, Sep 29, 2005 at 11:36:29AM -0600, Michael Downey wrote:
> I have an Intel Desktop D945GTP motherboard and I am running gentoo with 
> kernel 2.6.13-r2.  If I enable ACPI then the system will hang whenever 
> the hda-intel kernel module is loaded.  I did some more testing and I 
> found that if I enable "Local APIC support for uniprocessors" and 
> "IO-APIC support on uniprocessors" in the kernel then the hda-intel 
> module will load when ACPI is enabled.  The codec that is used on the 
> motherboard is a Sigmatel STAC9221 A1.  Is APIC a requirement for this 
> setup?  Also I've tried 1.0.10rc1 of the alsa-driver and got the same 
> results.
 
I hadn't noticed this myself since I have local apic support on in
my kernel, but have heard the same thing from other users. Haven't
looked into it further yet.

> Also I was wondering how to go about retasking the audio jacks?  The 
> default mixer only provides PCM, FRONT, CAPTURE, INPUT SELECT, and MIX.  
> I would like to know how to set up 2 of the jacks to be output jacks 
> which as far as I know is possible with hda-intel.

I am working on some updates to the SigmaTel HDA patch to support these
motherboards. The basic issue is that the BIOS doesn't set up the
proper configuration default registers on these motherboards so we
need to detect the motherboard and load the proper configuration
defaults. I also added in some switches to retask those jacks.

I have an issue with my boards in that they don't properly reflect
the Subsystem ID that should be used for identifying the motherboard
and jack configuration.  Can you do a
'grep Subsystem /proc/asound/card0/codec#2' and post the results?
I'd like to verify that your board shows the proper ID.

-Matt


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