Yes, it solves the issue.
But I'm trying to figure out how to make it permanent.
It goes back to 0 (mute) on every reboot.
Are you using PA at this point?
If so do you have the controls available to you in PA Vol Ctrl?
Yes, PulseAudio is enabled all the time.
Nothing has changed except I found out that Speakers are muted in Alsamixer.
In pavucontrol, the speakers show at 100% no matter where the slider is in alsamixer.
While a sound is playing, there is activity in pavucontrol sliders for Analog Output.
If "Speaker" is set to 0 in alsamixer, I can't hear sound from speakers.
If "Speaker" is set to 100 in alsamixer, sound comes from speakers.
Pavucontrol activity is showing in both cases.
Have you tried with the headphones disconnected?
Have you tried setting the Restore previous session option in Configure Your Desktop --> System Administration --> Startup and Shutdown --> Session Management , after enabling the sound, and before rebooting?
My headphones are disconnected all the time. I just connected them a couple of times to check if there is sound on the output.
I will try your suggestion O-P
I also thought of trying the setting "Restore volumes on login" in KMix which is currently enabled.
Will report a little later, my wife is busy with housekeeping at the moment