gksu gedit /etc/modprobe.d/alsa-base.conf
And comment (add a "#" in front of it) the last line called "options snd-hda-intel power_save=10". Basically, this is how the line should look after editing it:
#options snd-hda-intel power_save=10
save the file.
or
Open terminal and do:
Code:gksudo gedit /usr/lib/pm-utils/power.d/intel-audio-powersave
Find this line:
INTEL_AUDIO_POWERSAVE=${INTEL_AUDIO_POWERSAVE:-true}
and comment it out by putting a "#" in front of it like this:
# INTEL_AUDIO_POWERSAVE=${INTEL_AUDIO_POWERSAVE:-true}
Just below this line you make a new line, like this:
INTEL_AUDIO_POWERSAVE=false
So now you will have:
# INTEL_AUDIO_POWERSAVE=${INTEL_AUDIO_POWERSAVE:-true}
INTEL_AUDIO_POWERSAVE=false
Save the file (File > Save) and exit.
Reboot the computer.
The popping sound will be gone.
NOTE: If you for some reason need to undo the setting, just open the file again and remove the "#" from:
INTEL_AUDIO_POWERSAVE=${INTEL_AUDIO_POWERSAVE:-true}
and delete this line:
INTEL_AUDIO_POWERSAVE=false
Save the file.
Reboot.