Fix Dell XPS 9700 microphone
Table of Contents
I had some issues getting my microphone to work on my laptop. Here is the fix that worked for me. I put this here so it may help others.
1 Fix Microphone On XPS 9700
I fixed the Issue by switching the rt715 ADC 24 Mux selector in
alsamixer to DMIC3.
Save settings with sudo alsactl store. After storing the settings
you have to restore them on every boot up usinng alsactl restore. To
safe the settings to a specific file, useful for placing it under
version control, you can specify the -f flag in both alsactl
command followed by a file path i.e.
alsactl store -f ~/.config/alsa/asound.state alsactl restore -f ~/.config/alsa/asound.state
2 Noise Cancelation
The commands below will create a new device which you can select with
for example pavucontrol.
sudo cp /etc/pulse/default.pa /etc/pulse/default.pa.bak sudo cat <<EOT >> /etc/pulse/default.pa load-module module-echo-cancel source_name=noechosource sink name=noechosink set-default-source noechosource set-default-sink noechosink EOT