When the laptop plays on speakers and I plug the headphones in the laptop goes mute, but there is no sound in the headphones. I have to use the volume control app (or System Settings Audio menu) to set it automatically using connector drop-down list.
I only once heard about this problem on a old macbook.
What solved the issue there was a alsamixer switch that had to be turned on.
Can you execute alsamixer -c 0 in a terminal and see under the all tab if you can turn something on there that can help you solve your problem. As I don’t know how this option might be called can you maybe try all switches that are there one by one and see if it improves the situation.
I hope you can find the right one and that it works afterwards.
Just want to add (for people searching) that uncommenting that line worked for my Lenovo Z70, too. Thanks for the easy fix for an annoying little problem.
Wow… I must say I’m impressed with the new sound device managing in N-17! The system remembers now what volume was set for loudspeakers and headphones separately.
