Re: Muting only affects audio that is playing

Hello Sean,

On Wed Dec 10, 2025 at 4:56 AM CET, Sean C. Farley wrote:
> When I mute the mixer, it will mute any program currently playing audio
> to the device.  That is as expected.
>
> However, this does not prevent audio from being played in other
> conditions:
> - Restarting mpv.
> - Pausing then unpausing mpv.
> - Playing something in Firefox then skipping into the video.  Pausing
>    and unpausing seems to work with Firefox.
>
> I wish I could recall better, but I think it used to work at least prior
> to switching from the motherboard sound to a dedicated sound card.
>
> Mute should stick, yes?  I have also tried pcm.mute=on, but it does not
> change anything.

I do not run 14.3-STABLE anymore, but I am pretty sure this wasn't an
issue back then, and definitely doesn't seem to be a problem in
15.0-RELEASE. At least I do not recall anyone else having reported such
an issue.

Can you by any chance try with 15.0 and let me know if the issue
persists? I am not sure if that could be a sound card-specific issue, as
the muting functionality is done on the sound(4) layer, but if your
issue persists we'll have to dig investigate this scenario as well.

If you cannot try 15.0, can you at least recompile sound (or your kernel
if sound is compiled into the kernel) and re-test?

Christos