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Re: ALSA pcm problem




On 7/10/22 10:41, Thomas George wrote:

On 7/10/22 6:45 AM, Dan Ritter wrote:
Thomas George wrote:
On 7/9/22 11:46 AM, Dan Ritter wrote:
Is that on all attempts down the line of devices?

If so, I would guess that you have something claiming them
already - pulseaudio or jack or pipewire. Check for running
processes.

-dsr-


I killed pulseaudio and initially speaker-test worked.

then after playing an ogg file and doing some other routine tasks suddenly
nothing worked, no sound, nothing.

I rebooted to load an older system, Buster. Of course everything worked
there.

Rebooted to Debian 11. This reloaded pulseaudio and speaker-test worked.

Played an ogg file and volume control showed sound was from Alsa plugin
using GP107 High Definition Audio Controller Digital Stereo (HDMI)

Volume control also showed three channels for Starship/Matisse HD Audio
Controller Analog Stereo labeled:

speach-dispatcher-dummy, speak-dispatcher-espeak-ng, and firefox

None of these was active.

I don't understand all this. My speakers are better than the monitor speaker and have both an analog and an optical connection to line out but are not
used.

This is different from my original problem. I'm not sure how I got here but
I would appreciate any help in unraveling  this.
pavucontrol (pulseaudio volume control) redirects audio as well
as controlling volume. Start it, go to the configuration tab,
and select "OFF" for your HDMI outputs and turn on the
appropriate analog outputs for your speakers.

Note that pulseaudio is fond of seeing an HDMI connection turn
off and on (i.e. the monitor turns off and on) as a request to
make that HDMI output the new active one.


-dsr-


pavucontrol does not solve the problem. What I described above is the devices shown when playback is selected.

If all of these are muted the audio file continues to play from the monitor speakers.

If output devices is selected just two ports are shown: Line Out (starship...) and HDMI/Display Port. Both are selected, that is a blue bar is shown. I set both to 50%.

If HDMI port is muted blue bar disappears and audio output ceases. Line Out port bar is still blue and selection is checked but no audio output.

Note: In the past there was an additional line showing signal fluctuation. This feature has been lost

Tom


OK, your last message finally penetrated. Turned off HDMI in the configuration tab and audio goes to external speakers.

Thanks, Tom


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