Re: [PATCH] ALSA: hda/intel: Add MSI X870E Tomahawk to denylist by DMI ID

[Takashi Iwai <tiwai@suse.de>]

On Fri, 27 Mar 2026 17:15:38 +0100,
Mario Limonciello wrote:
> 
> 
> 
> On 3/27/26 10:57, Stuart Hayhurst wrote:
> > This motherboard uses USB audio instead, causing this driver to complain
> > about "no codecs found!".
> > Add it to the denylist to silence the warning.
> > 
> > The first attempt only matched on the PCI device, but this caused issues
> > for some laptops, so DMI match against the board as well.
> > 
> > Signed-off-by: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
> 
> Thanks!
> 
> Takashi,
> 
> Probably worth asking - why is the "no codecs found" ERR in the first
> place?  There are obviously designs out there like this, should the
> ERR message be simmered down?

Although HD-audio is a bus that can be dynamically enabled / disabled
codecs, it's been supposed to be rather static and exposed only if
there is really a need for it -- that is, only if there is a codec on
it.  So "no codec" is seen as an error for now if you try to
initialize the HD-audio controller.

We may downgrade it, but the situation is still not ideal either; the
driver is still bound without serving anything useful, and it needs to
react for the PM and other things.  Since the probe of codecs happens
after the driver probe stage, the driver can't go away by itself,
unfortunately.


thanks,

Takashi