--- olpc-configure.orig	2007-11-02 21:30:00.000000000 +0930
+++ olpc-configure	2012-03-20 15:50:00.414595052 +0930
@@ -57,6 +57,10 @@
 	amixer -q sset 'Analog Mic Boost' '30dB'
 	amixer -q sset 'Capture' '100%' cap
 
+       # fix from issue #941
+       amixer -q sset \"Master Surround\" 31 unmute
+       alsactl store
+
 	if [ -x /sbin/rfkill -a -e $OLPC_HOME/.rfkill_block_wifi ]
 	then
 	    /sbin/rfkill block wifi