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I recently installed Ubuntu 14.04 on my Dell XPS 15 (L502X). Previously I had Ubuntu 12.04 installed on the laptop along with Windows 8.1 dual boot. The sound worked perfectly fine in Ubuntu 12.04 and is working fine in Windows 8.1. Of late, I have been experiencing sound distortion coming from the subwoofer at moderately high volume levels. At the same level I am unable to reproduce the same effect in Windows 8.1. Also, I did a clean install of Ubuntu 14.04 over 12.04. Can anyone please confirm this and help me with this? Thanks

Aditya Shah
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1 Answers1

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I had the same problem, I found the solution in the below post.

http://ubuntuforums.org/showthread.php?t=2004747

Basically we need to install an equalizer to control the amplitude at the lower range of the sound spectrum.

So follow the steps in the below link to install pulseaudio :-

http://www.webupd8.org/2010/02/pulseaudio-system-wide-equalizer-now.html

You can then search for "PulseAudio equilizer" in unity and then reduce the lower range values.

The setting I used was: 50hz : -25.4dB 100hz : -19.1dB 156hz : -8.9dB

220hz and above : 0db.

Hope this helps.

Verghese Koshy
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