Ubuntu :: How To Fix Popping Sound In 11.04 Natty

Since I installed Natty recently, I had this "popping" sound from the speakers when the laptop was running on battery. Turns out this popping has to do with a power-saving feature for "hda-intel" sound-chips.

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.

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.