Chrome OS has a native sound manager for accessing your sound card’s settings. It is “Alsamixer“, a graphical mixer program for the Advanced Linux Sound Architecture (ALSA). It is used to configure sound settings and to adjust the volume.
It has a ncurses user interface and does not require the X Window System. It supports multiple sound cards with multiple devices. You get to control Master Volume, Headphone volume, Speaker, PCM, and Mic. There is “Mic Boost” as well.
How to Access Alsamixer on Chrome OS
Get the command prompt bu pressing CTRL + ALT + T
Now, type shell and hit enter, and go to shell prompt.
Here, type alsamixer and hit enter.
You will now have the Asamixer screen. Here are the command line options according to wikipedia page for this application.
|Help: show available flags.|
|Select the soundcard to use, if you have more than one. Cards are numbered from 0 (the default).|
|Select the mixer device to control.|
|Toggle the usage of colors.|
|Select the starting view mode, either playback, capture or all.|
If you have CR48, try this out and let me know how it goes !! I am waiting to get my Chromium OS netbook back in action to try this there.