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C-Media CMI8738

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The CMI8738 is one of the C-Media cards supported by the cmipci ALSA module.


Initial Setup

Before plugging speakers into the card, check the Master volume control is at a reasonable level, but not at maximum (you might damage your speakers, or worse, your ears).

Also check the following controls are unmuted (and set to reasonable levels):


The following is a partial list (it ignores Capture controls):

The Master control on this card is purely a volume control (it has no 'mute' switch).

Troubleshooting Hints

No Sound from Analog Speakers

If you hear no sound when using this card with analog speakers/earphones, try switching off the following:

These can be switched off using alsamixer, amixer or other available mixers. (Tested using Debian 4.0r6, alsamixer v1.0.13 and headphones connected to the SPK jack socket.)

See Also

Retrieved from ""

Category: Sound cards