Comment 0 for bug 1781316

Steps:
1. Install system and log in.
2. Navigate to 'System Settings' -> 'Sound' -> 'Output'
3. Plug in an external speaker into the front jack
4. Navigate to 'System Settings' -> 'Sound' -> 'Input'
5. Plug in a microphone into the front jack

Actual result:
Sometimes system can not notice that there is a speaker or microphone plugging in;
Both 'Input' and 'Output' tabs can not show the new devices;
Try to play a voice or record a sound failed.

Expected result:
Both external speaker and mic should be working normally.