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Ubuntu Maverick wont work with my external speakers

Hello guys. I've installed Ubuntu Maverick in my laptop and everything works great. I can hear sounds and everything, but when I connect headphones or external spakers nothing happens. Music keeps coming out of the laptop speakers and nothing comes out of the connected device.

I've already checked Sound Preferences and tried all the "Devices" and nothing seems to be working. What could I do?

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migrated from serverfault.com Mar 22 '11 at 21:59

This question came from our site for professional system and network administrators.

marked as duplicate by BloodPhilia, studiohack Mar 23 '11 at 22:32

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

    
Duplicate of superuser.com/questions/261093/… also migrated but from stackoverflow –  laurent Mar 22 '11 at 23:32
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2 Answers

up vote 0 down vote accepted

I don't know which is your laptop but this works on Toshiba Satellite and others.

Problem: Built-in speakers work. Plugging in headphones do not mute speakers.

Audio: Conexant CX20585

Solution:

edit:

/etc/modprobe.d/alsa-base.conf

to add:

options snd-hda-intel model=thinkpad
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Thansk! Worked! –  Dbugger Mar 23 '11 at 18:25
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Open up a terminal with Ctrl-Alt-t and type alsamixer and hit enter. Use the arrow keys to move the red highlighting to any channel than has MM at the bottom and hit the m key to unmute it. If any channels (such as "Headphones" or "Speakers") are not at 100% volume, you can change this with the up and down arrow keys. Press escape to quit.

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