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I've recently done a fresh install of Lubuntu 13 on my laptop, I immediately noticed a recurring clicking sound when it wasn't charging.

Running:

    lspci | grep -i audio

gives:

Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 04)

Some investigation led me to this question/answer: How do I fix laptop speakers popping when no sound is playing?

Running the script fixes the problem which seems to prove that it is related to power-save mode. Unfortunately I need to run the script every time I reboot.

Does anybody know of a way to make this change permanent, or if there is a better way to go about resolving this?

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AndySX
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2 Answers2

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OK, I've just come across a solution that appears to work, even after a reboot. I found the solution here: http://ubuntuforums.org/showthread.php?t=1788483 but I'll paraphrase in case the link stops working.

Open terminal and type:

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 add 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 your computer.

The clicking/popping sound will be gone.

Essentially this will stop the Intel driver from putting the hardware into sleep mode. Not ideal, and hopefully a future update will fix it, but hopefully this will be of help.

AndySX
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You can use the file audio-power-save-off which consists your script to run every time your system starts. You have to add it on Startup Applications.

  • Search for Startup Applications on your dash and Run it. You can also find it in directory /usr/share/applications. Just browse it.
  • Once started, click Add button.
  • Give some name on first field, Browse for the file where you stored audio-power-save-off for the second field and again give some comment for the third field. Then Add.
  • Your script would be executed each time you starts your system.

Give it a try, hope it works for you..

Also I found this link somewhat important.

Saurav Kumar
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  • Hi @saurav-kumar, thanks for the quick response. Unfortunately Lubuntu doesn't seem to come packaged with Startup Applications so I tried your second suggestion. Sadly adding the script into /etc/rc.local didn't seem to do anything. I also tried copying the script to ~/.config/autostart/ but that didn't work either. I can't find Startup Applications in Package Manager or the Software Center? – AndySX Sep 01 '13 at 07:27