[Steps to reproduce]
1. Power on the system
2. Connect a headphone which has a microphone to a 3.5mm jack
3. Use a voice recorder to record voice or run the following test in the checkbox
$ checkbox-cli run audio/alsa_record_playback_external
4. Check if the voice recording function works properly
[Expected result]
The voice recording function works properly
[Actual result]
The voice recording function cannot work
[Steps to reproduce] record_ playback_ external
1. Power on the system
2. Connect a headphone which has a microphone to a 3.5mm jack
3. Use a voice recorder to record voice or run the following test in the checkbox
$ checkbox-cli run audio/alsa_
4. Check if the voice recording function works properly
[Expected result]
The voice recording function works properly
[Actual result]
The voice recording function cannot work
[Failure rate]
3/3