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problem with sound for bullseye upgrade on amd64: must be root for sound to work on my machine

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Hello,

I am a long-time debian user, and just recently upgraded my buster amd64 
machine to bullseye.  Essentially everything works as expected so far.  
However, one very nagging problem I currently have is that my sound does 
not work unless I am rooted.  For example, if I issue the command

aplay bark.au

where bark.au is a snippet sound file of a dog barking, it fails.  
However, if I issue the command

sudo aplay bark.au

it works fine.  Similar sound playing occurs with any sound-playing 
app.  For example mpg123, vlc, etc., all require a sudo or be logged in 
as root to work.

I have looked all around the WWW to try to find a solution to this 
problem.  The most common solution is to make sure that user ids are in 
the audio group in the /etc/group configuration file. Of course, I have 
that, and have confirmed it.  This is not a brand new installation after 
all, but an upgrade.

Other common remedies I have tried are to fiddle with the pavucontrol 
and alsamixer settings.   My sound card does not show up in the 
pavucontrol (pulse doesn't find my sound card), but DOES show up in the 
alsamixer.

I have also looked at the debian sound wiki, and other sources to try to 
fix this problem.

Then, I remembered that I often used this form to learn about debian way 
back in the days when I first started using debian about 1994 or so.  
Perhaps I can get some expert help.  Maybe a source I can go down a list 
of troubleshoot to nail this one down.  It is obviously a permissions 
issue (I also looked at device permissions, etc.).

Just a bit puzzled and frustrated.

P.S.

BTW, my sound card is a C-Media, Xonor DG with chip set CMI8788 and uses 
the oxygen HD audio driver.

lspci -v output corresponding:

05:02.0 Multimedia audio controller: C-Media Electronics Inc CMI8788 
[Oxygen HD Audio]
         Subsystem: ASUSTeK Computer Inc. CMI8786 (Xonar DG)
         Flags: bus master, medium devsel, latency 64, IRQ 22, NUMA node 0
         I/O ports at e800 [size=256]
         Capabilities: [c0] Power Management version 2
         Kernel driver in use: snd_oxygen
         Kernel modules: snd_oxygen

Nothing has changed with the hardware, and I know the setup works.  This 
seems to be a permissions/software issue.



-- 

James D. Freels, Ph.D., P.E.
freelsjd@gmail.com
865-457-6742 (landline)
865-919-0320 (cell)

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problem with sound for bullseye upgrade on amd64: must be root for  sound to work on my machine James D Freels <freelsjd@gmail.com> - 2021-08-24 21:10 +0200
  Re: problem with sound for bullseye upgrade on amd64: must be root  for sound to work on my machine James D Freels <freelsjd@gmail.com> - 2021-08-25 19:10 +0200
    Re: problem with sound for bullseye upgrade on amd64: must be root  for sound to work on my machine Georgi Naplatanov <gosho@oles.biz> - 2021-08-25 19:40 +0200
      Re: problem with sound for bullseye upgrade on amd64: must be root  for sound to work on my machine James D Freels <freelsjd@gmail.com> - 2021-08-25 20:40 +0200
        Re: problem with sound for bullseye upgrade on amd64: must be root  for sound to work on my machine James D Freels <freelsjd@gmail.com> - 2021-08-25 21:10 +0200

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