allan gottlieb <gottl...@nyu.edu> wrote: > On Wed, Jul 13 2016, Canek Peláez Valdés wrote: > > > On Wed, Jul 13, 2016 at 12:55 PM, allan gottlieb <gottl...@nyu.edu> > > wrote: > >> 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 three different ones). > >> > >> The sound settings gui recognizes that headphones are in. The > >> sound test is silent. If I select the internal speakers in the > >> gui (with the headphones still in) sound is fine. > >> > >> Is there some headphone option I must enable in the kernel or > >> elsewhere? > > > > The volume is probably muted for the headphones. Install > > pavucontrol, and execute it while the movie is playing. In the > > "Output Devices" tab look for your sound card (probably something > > like "Built-in Audio"), and in port select "Headphones". Then > > adjust the volume. > > > > Regards. > > Thank you (and robot1). I installed pavucontrol and followed your > instructions. The volume was selected in the middle (100%). We see a > volume meter going up and down as expected with either headphones or > speakers selected. When mute is pressed the meter looks dead, as > expected. > > It also shows line-out is unplugged and headphones are plugged it. > > Any thoughts. I appreciate the help.
Maybe the headphone amp or the headphone socket of your soundcard is broken. Plug the speakers into the headphone socket and test if you can hear something. For my experience you can do that without the risk of killing something, but of course I can give you no guarantee. :-) -- Regards wabe
