Comment 9 for bug 1504778

I have found what was the problem! My external stereo speakers were plugged in, and pulse audio/alsa bugged out and thought that it was mic plugged in. Unplugging speakers and plugging them back in solved the problem.

With kernel 4.3rc7 I can confim that mic is fixed on this laptop (hda-dkms + ubuntu kernel don't solve the problem). So I will use 4.3 kernel until your fix is backported to ubuntu kernel.

Thank you David for all the help and sorry for the noise!