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Retired Moderator
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I'm having an Ubuntu 10.04 installed on my laptop.


When I'm connecting the headphone I hear the sound simultaneously in the headphone's speakers and in the laptop's speakers.  When connecting a headphone the sound from the laptop's spearker should be disabled.

Does anyone know how to resolve this problem?



1. update the ALSA driver:

go to:


choose the debian pakage:


2. appending the following line to /etc/modprobe.d/alsa-base.conf and rebooting:
options snd-hda-intel model=thinkpad

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