Re: [gentoo-user] Sound not sounding

[Michael <confabulate@kintzios.com>]

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On Thursday, 24 March 2022 22:04:48 GMT Mark Knecht wrote:
> On Thu, Mar 24, 2022 at 2:35 AM Peter Humphrey <peter@prh.myzen.co.uk>
> wrote: <SNIP>
> 
> > > System Settings -> Audio
> > > 
> > > should show your playback devices. Possibly the setting got switched to
> > > an HDMI output on your video card or to the chipset sound device
> > > and isn't USB at the moment?
> > 
> > As I said, I do see all three sound devices there. I can switch them each
> > on and off, and assign the kind of output I want from them. I do that,
> > and using the Test buttons I hear nothing.
> > 
> > --
> > Regards,
> > Peter.
> 
> Sorry, if that was actually in the original post I just didn't understand.
> 
> Jack's response to you was more complete and duplicates my thinking
> about how to approach debugging.
> 
> To answer one of your earlier questions, but I doubt it applies in the
> case of a simple USB sound device, it is possible for other programs
> to program certain sound cards in ways that Alsa & pulseaudio would
> not know about. I've used an RME HDSP9652 studio sound card
> for about 15 years. It has 52 inputs, 52 outputs and lots of internal
> hardware routing that general Linux sound doesn't know about and
> cannot control. It's configured using two apps (hdspconf and
> hdspmixer) to do a lot of special things that are recording studio
> specific. At times I've misused these programs and had a lot of
> mysterious problems. That said I think it's very unlikely anything
> like this applies in your case, but technically it's possible.
> 
> Good luck getting this solved. Weird stuff.
> 
> Mark

I usually troubleshoot such problems as Peter has, by creating a vanilla user 
account to compare settings against my normal user.  Using diff between the two 
accounts ~/.pulse files tends to reveal anything lurking in the undergrowth.  
'pactl stat' may also reveal any user differences.

Another thought, it may worth checking group membership, audio and plugdev/
usb(?), are the same for all users.  I mention this, because some recent 
update had me adding a user to the usb group to be able to use a USB scanner, 
which for many years had worked fine with plugdev membership only.


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