Fix for Intel 915 Sound Problem

I've found a solution to a problem with audio on the Intel 915 boards. I don't know if this is the only problem.

The mixer for hda-intel is very odd. The master volume has no affect. This means that unmuting the usual volume control and turning it up does nothing.

The real master volume control is the control labelled Front. Unmute it and turn it up to about 80% and audio should work, assuming that the other controls have not been fiddled with too much.

Digg it: