Ubuntu Gnome 16.10, Dell Latitude 3540
With 16.10, when you insert the headphone jack, it senses and a dialog comes up, to which I selected "Headphones", but no sound comes.
Sound is fine on speakers. Sound is fine on headphones under windows.
I tried alsamixer, and it correctly shows headphones at 00,100, and speakers at MM.
pavucontrol shows sound coming from VLC player and headphone output at 100%
$ lspci | grep Audio 00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)
Before I start meddling with conf files in alsa-mixer, does anyone have a clue on what could be going wrong? Everything was fine in 16.04.