No external sound on Ubuntu 9.10

Solution 1:

Are your speakers active or passive?

If they are active then they'll need an external source of power. If they are passive then they'll take the power from the audio output, but that might not be enough to drive them.

Also (though this is a bit obvious) check that you've got the speakers plugged into the correct output of your sound card. Some have separate outputs for speakers & headphones etc.

Solution 2:

Have you tried running alsamixer in a terminal? Alsamixer seems to be the most reliable for me at this point until updates come down....

so just open a terminal and digit

alsamixer

Alsamixer quickie tips: left - right to navigate up - down - change levels M - key - toggle mute/unmute B - key - balance channel pairs

Take care :)

Update kernel:

type in terminal: uname -r

Next find available kernel images typing in terminal:

sudo apt-cache search linux-image

Now install kernel by explicitly specifying version number typing in terminal:

sudo apt-get install linux-image-x.x.x-xx