alsamixer - settings won't save after reboot

[acer8930]

Hello,

I'm on Ubuntu 9.10 Karmic Koala.

My laptop has a 5.1 surround sound, and my Center speaker is blown (crackles when playing) so I need to disable it.

I "sudo alsamixer"
Lower the center speaker to "00".
Hit "ESC"
"sudo alsactl store" to save settings.
When I reboot, the Center speaker is back to normal and I need to repeat the process.

I've seen some forums say to use "amixer" but I can't figure it out.
Anyone know how I can solve this problem?

[mCion]

similar problem here, need to mute the external speaker or else I have no sound. I've also tried following those instructions to save alsamixer settings with no success.

ideas anyone?

[P4man]

you dont need sudo to run alsamixer. In fact perhaps thats even your problem. Try setting alsamixer without sudo.

If that fails try

amixer set 'PCM Center',0 0

If that works, add it to your session.

[whitethorn]

Hi I had something of the same problem with the beta. Here's a fix that works for me.

http://ubuntuforums.org/showthread.php?t=1290130

I'm not sure if you need sudo alsamixer. I can't even use the volume button on my keyboard because as soon as I touch it my PCM volume goes full and it sounds like s***.

[acer8930]

you dont need sudo to run alsamixer. In fact perhaps thats even your problem. Try setting alsamixer without sudo.

If that fails try

amixer set 'PCM Center',0 0

If that works, add it to your session.

That works, but I needed to remove "PCM":

amixer set 'Center',0 0

Works perfectly now.
Thanks for the help.