check either with alsamixer and make sure the headphone jack isn't muted, or look into pulseaudio if you're using that, although I can't help much there as I don't use pulse.
Hardware: Dell Latitude E7450 laptop
Gentoo essentially all stable
Gnome / Systemd
When I play a movie using totem it sounds fine if no headphones are
plugged it.
No sound at all with headphones. I tried a few, one with a microphone
several without.
The gnome sound settings gui recognizes that the headphones are in but
the sound test is silent. If, with the phones still in, I select the
internal speakers, all sounds well.
I installed pauvcontrol and selected "Output Devices".
When I selected "Speakers" as the port the volume meter moves around
normally and the sound is fine.
When I selected "Headphones (plugged in)" as the port the volume meter
again moves around normally but there is no sound.
This laptop dual boots windows. I played the same movie on windows and
sound was normal both with the speakers and the headphones.
What should I try next?
thanks,
allan