Lenovo W530 running Xubuntu 13.10 The microphone appears not to be working. 2 tests made one with audacity and a second with skype. In both instances there appears to be no input. 'Input devices' in the volume control module, also 'recording' indicates background static only. I have opened alsamixer and ensured that everything including microphone boost is set to high. I have tried the changes to alsa-base.conf without success.