Comment # 48 on bug 1193063 from Eduard Steinbacher

I created the file /etc/modprobe.d/61-hda.conf with the command line. 

Then I rebooted the pc. 

I had the amplifier connected on LINEOUT rear and nothing elese connected.
I started pavucontrol and set the LINEOUT to headphone (unplugged).

I was getting sound with noise.

Then I connected the headphone into the plug infront; pavucontrol changed to
headphone (plugged in). There was still noisy sound on the headphone.
After unplugging the headphone pavucontrol showed LINEOUTPUT (plugged in) with
no sound at the amplifier.