Comment 0 for bug 1942043

[Reproduce Steps]
1. Attach external speaker to SUT
2. Try to reboot SUT or stay in OS.

[Results]
 Expected Result
 No noise.
 Actual Result
 Noise will pop up during WB or stay in Ubuntu OS when external speaker attached.

[Others]
[Scenario 1] Login to the Ubuntu OS.
(Occurs only in Cirrus, within 5 seconds after logging in to OS)
Can 100% reproduce on Cirrus MB with Ubuntu. Noise can be heard (咚咚 Sounds) after login the Ubuntu within 5 secs.

[Scenario 2] Reboot Ubuntu OS
(Both Curris and Realtek happen. WB/CB/shutdown OS)
Can 100% reproduce on Cirrus MB with Ubuntu. Noise can be heard While both exiting OS and entering OS.