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My laptop is ThinkPad T61, with Ubuntu 10.10 installed. The sound works all well, until I plugged the Creative XiFi Go USB sound card. After I reboot my computer, the internal speaker is muted automatically. I have to use 'alsamixer' to unmute it each time. How can I persistent this setting?

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@Alaukik: although Ubuntu is the distribution involved, this isn't particularly Ubuntu-specific. When questions and answers could be generally useful to people not running Ubuntu, they're better here. – mattdm Mar 19 '11 at 14:10
up vote 1 down vote accepted

The command you want to execute is:

amixer sset Master 50%

To have it run when you login, add it to System > Preferences > Startup Applications as the command.

To have it run at boot time, add it to your /etc/rc.local file.

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I have tried this before. But my question is why this happens only after I used my USB sound card? There must be something wrong in the System setting. – davidshen84 Mar 20 '11 at 2:28

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