linux-kernel - Re: Kernel 2.6.22 + ALSA + Intel HDA = hda

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Message-ID: <s5h644ky87i.wl%tiwai@suse.de>
Date:	Mon, 16 Jul 2007 12:05:37 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Dan Aloni <da-x@...atomic.org>
Cc:	Justin Piszcz <jpiszcz@...idpixels.com>,
	linux-kernel@...r.kernel.org, alsa-user@...ts.sourceforge.net
Subject: Re: Kernel 2.6.22 + ALSA + Intel HDA = hda_codec: Unknown model

At Sat, 14 Jul 2007 17:36:15 +0300,
Dan Aloni wrote:
> 
> On Sat, Jul 14, 2007 at 06:18:40AM -0400, Justin Piszcz wrote:
> > Hi all,
> > 
> > I use an A-BIT AW9D-MAX motherboard and while the audio works fine using 
> > the Intel HDA driver; however, I see this in dmesg:
> > 
> > [   29.188561] Advanced Linux Sound Architecture Driver Version 1.0.14 
> > (Thu May 31 09:03:25 2007 UTC).
> > [   29.188728] ACPI: PCI Interrupt 0000:00:1b.0[A] -> GSI 16 (level, low) 
> > -> IRQ 17
> > [   29.188822] PCI: Setting latency timer of device 0000:00:1b.0 to 64
> > [   29.240729] hda_codec: Unknown model for ALC882, trying auto-probe from 
> > BIOS...
> >                           ^^^^^^^^^^^^^
> > [   29.280743] ALSA device list:
> > [   29.280781]   #0: HDA Intel at 0xfdff8000 irq 17
> > 
> > 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High 
> > Definition Audio Controller (rev 01)
> > 
> > Two lspci (-vx) listings attached.
> > 
> > Can we get the PCI ID added to the kernel source so it does not say 
> > unknown model?
> 
> Actually, it is reported as unknown in a deeper probing level than
> PCI. I once made a patch that among other thing identified that 
> A-BIT board exactly. 
> 
>     http://mailman.alsa-project.org/pipermail/alsa-devel/2007-April/000441.html
> 
> It is possible to take this patch, drop the other bits and just
> leave out the nice print that just tells it's A-BIT AW9D-MAX.

Your fixes are implemented in another way, so it should work as it is
on 2.6.23 once after alsa.git is merged -- except for (obviously
annoying-for-some-people) "unknown model" message.  I'd say, simply
ignore it ;)  It's no bug.

> Though AFAIK, ALSA maintainers have plans to move most of the 
> probing code to userspace somehow so I'm not sure if it is 
> quite relevant.

Yeah, we'd like to go in that way, but it gets stucked right now,
mainly due to lack of development time.  A proto-type is availabe at
	ftp://ftp.suse.com/pub/people/tiwai/hda-tools/
but not sure whether this development will be continued to the final
form or choose another method.


thanks,

Takashi
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