Ubuntu 16.04 constant noise problem with headphones

I'm using Ubuntu 16.04 on my xps 13, it is working fine except this problem. When I plug headphones in then a constant noise starting and never go until plug headphones out. I read about this problem and tried all of the solutions in this topic and turned auto-mute mode off in alsamixer but nothing has changed.

Can anyone help me? Thanks in advance.

I had exactly this same problem with my XPS 13 and found a solutions here:

https://www.reddit.com/r/Dell/comments/4j1zz4/headphones_have_static_noise_with_ubuntu_1604_on/

Essentially you need to do the following: Start up alsamixer, then turn "Headphone Mic Boost" (that's the third control from the left for me) from "[dB gain: 0,00, 0,00]" one step up to "[dB gain: 10,00, 10,00]".