The suggested fix in Raymond's post #26 doesn't work. This computer has no combined audio port (now tested), and enabling dell-headset-multi disables the separate external microphone port as well. Internal microphone still not recognized.
The suggested fix in Raymond's post #26 doesn't work. This computer has no combined audio port (now tested), and enabling dell-headset-multi disables the separate external microphone port as well. Internal microphone still not recognized.