Comment # 13 on bug 1163046 from Felix Miata

(In reply to Takashi Iwai from comment #12)
> In your case, it's rather about the misunderstanding.

What this is about is undiscoverable or absent documentation. All that "mixed
up" stuff is exemplifying the result of what packaging has mis- or not provided
at all. I started trying to make the comment #0 PC work 13 days ago, and still
haven't found any ostensibly official audio configuration documentation to
resolve the failures on any of my own HDMI PCs. If upstream has satisfactory
documentation, its location needs to be discoverable on opensuse.org or
someplace a desktop user without internet access can find it.

May I copy and paste

[quote]
- In general, PA is recommended for HDMI access on a desktop system -- if
available
- The auto-start of PA is disabled for root as default due to the system
security matters
- If non-PA access is required, the special PCM device (hdmi:xxx) must be used
for accessing to HDMI or DP.  The direct access with hw:xxx or plughw:xxx, and
with default:xxx wouldn't work.
- Also for non-PA access, the card indexing may require manual adjustment; it's
nothing new, rather the system setup issue.
- YaST sound module may help setting up the system configuration with the
module options, but nothing more than that.  It cannot know about the above
things, and it's rather an obsoleted feature to be dropped in future.
[/quote]

into https://en.opensuse.org/SDB:Audio_troubleshooting so that users at least
have a diagnostic starting point to work from when HDMI out fails to produce
sound?

> - The auto-start of PA is disabled for root as default due to the system
> security matters

So it can be started manually? If so, how? What makes it auto start for a
regular user?

> - If non-PA access is required, the special PCM device (hdmi:xxx) must be
> used for accessing to HDMI or DP. 

How does one create such a configuration?

> - Also for non-PA access, the card indexing may require manual adjustment;
> it's nothing new, rather the system setup issue.

To be done how?