Ubuntu
nvidia-hdmi-pulseaudio package

  1. Bug #1353013
  2. Comment #9

Comment 9 for bug 1353013

Revision history for this message
Andrei Costescu (costescuandrei) wrote :

I have the same thing happening on Ubuntu 14.04. Identical; popping and when that happens volume goes for a few millisecs to another level then back. In the audio settings, analogue output dissapears exactly when the sound pops and reappears immediately.

As the initial poster mentioned on the forum, if I plug the speakers/headphones in the front jack of the PC it works normally - no popping. So popping only happens when only back side jack is used with speakers.
Forum post: http://ubuntuforums.org/showthread.php?t=2245429

For example if I have speakers conncted to back jack and headphones to front jack sound also works normally in both.
Is this a hardware (front jack malfunction) or software problem? Should I go back to the store and ask for replacements?