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not sure what changed, but when I upgraded to ubuntu 11.10 my laptop (acer aspire 3050) started to get problems with my headphones.

now when I put headphones in is that the sound comes out of both the headphones and the laptop speakers, and that sound levels reset to maximum when I restart the laptop.

I can turn off the speakers using alsamixer.

I have also tried changing the settings in /etc/modprobe.d/alsa-base.conf but no joy so far.

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Duplicate of – Rory Alsop Nov 13 '11 at 11:19
not sure this is a duplicate, i have tried all of the acer options in /etc/modprobe.d/alsa-base.conf – user33672 Nov 14 '11 at 10:39

I had no sound coming through my headphones until I switched the output to Analog Speakers. Now it's fine.

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