Comment # 7 on bug 1205887 from Takashi Iwai

(In reply to Mathias Homann from comment #6)
> (In reply to Takashi Iwai from comment #5)
> > In the log, you can find the following:
> > 
> > !!Modprobe options (Sound related)
> > !!--------------------------------
> > 
> > snd_hda_intel: id=PCH index=1
> > snd_hda_intel: id=HDMI index=0
> > 
> > ... and that's the configuration failure.  You are defining twice for the
> > same driver in different ways, conflicting with each other.
> > 
> > If you must apply those slot swapping, it should be applicable like
> > 
> >   options snd_hda_intel index=1,0 id=PCH,HDMI
> > 
> > and additionally, reserve two slots by
> > 
> >   options snd slots=snd_hda_intel,snd_hda_intel
> > 
> > I close the bug for now.  If the setup above still shows the problem, please
> > reopen.
> 
> Well, here's the thing, I didn't do that. In actual fact, I haven't done
> *any* manual configuration on sound, it's all yast.

But you must have explicitly configured the sound setup via YaST in the past,
and that was the result.  YaST won't write such options unless user requests
it.

> Also, that actually *is* my hardware. Onboard intel chip that can play
> through the analog sockets or through the HDMI port of my GPU. Has worked
> fine for 10+ years, now it's suddenly a misconfiguration?

You were just lucky, and the luck was gone when you change some hardware
configuration or plug another device like USB-audio.

> Then how else is that supposed to be set up, and why has it just now started
> to fall apart on me, and why does it only sometimes fail? Like I said in the
> comment on the attachment - that alsa-info output is from when everything
> *works*.

It works for now because the hardware configuration casually matches with the
old setup.

At best, drop those old configurations.  With the modern sound backend like
pipewire or PulseAudio, such static configurations make little sense and rather
confusing.  If any static configuration is needed, it's at user's own risk.

IMO, YaST sound module should be dropped.  But it's a bit different story.