Ubuntu – Adjust Headphone Volume with Fn Keys in Jaunty

audiofn-keykeyboard shortcutsUbuntuubuntu-9.04

I always have my master channel muted, and I switched the volume applet to adjust the headphone channel. This way, sound never comes out of my speakers, but it's always on when I plug headphones in.

However, when I use my Fn keys to adjust volume, they adjust the "master" channel, rather than the "headphone" channel. How do I change this behavior? If it makes a difference, I am using a Dell Inspiron 1200.

Best Answer

This is specified by the System > Preferences > Sound menu option. Select the channel you want to control under the Default Mixer Tracks section.

Sound Preferences

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you can use xbindkeys: Run xbindkeys -k in a terminal. Press your keybinding, and add the appropriate line to your ~/.xkeybindkeysrc. for example, With an 'amixer' command to raise/lower your headphone volume.) Don't forget to have xbindkeys start before your windowmanager. You can have a look here for more on xbindkeys. This way, you're not dependent on DE, and you can even transfer you keyboard short cuts to other distros/releases.

(I know it's not exactly what you want, but it might solve your problems?)

Linux – No sound out of headphone port on laptop

Your kernel might not be detecting the card properly. Try setting the module options manually by adding the following line to your /etc/modprobe.d/alsa-base.conf

options snd-hda-intel model=asus enable_msi=0

(Credit Chris Benninger)

You can find a complete list of options here

You might also want to have a look at the Ubuntu HDA Intel Sound Howto.

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