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I have an HP DV6-6154tx laptop and i recently installed Ubuntu 12.04 with dual boot on it.

The Problem is only two of my speakers are working and the sub-woofers also are not working.

The result is extremely quiet sound from my laptop.

Please help.

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See if this helps you:… – Takkat Sep 30 '12 at 17:31

I have the same laptop, I found a partial solution. With this solution the sub-woofers don't mute on headphone plug in.

open the file:


add the line:

options snd-hda-intel model=ref

If you find a better solution please let me know!

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add the line:

options snd-hda-intel model=ref

Instead of 'ref';

Is a list of models- instead of model=ref put in your model- or the most similar, eg, im running a hpdm4, I use model=hp-dv7-4000

I then use alsamixer from terminal to alter the volumes of the speakers, discovering as i do that bass is coming out the front speakers, and other channels through the subwoofer.

There is a method to swap these, but you will have to google it!(am in a hurry)


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