I plug in headphones and it's not detected at all same with my speakers. I try to use USB headphones and they pop up in the sound options as Logitech headphones. I want to get the green headphone jack working - I'm on Ubuntu 14.10.
In alsamixer the headphone option cannot be changed with the arrow keys - please help.
Card: HD-Audio Generic
Chip: Realtek ALC662 rev1