Chrome OS Version:  11151.47.0, 71.0.3578.73 (beta) channel 
Android vers: 9
Devices: Nocturne DVT main4 (0751)

Steps To Reproduce:
1. Power on device with Whisker keyboard docked
2. Connect a USB stereo headphones (i use the SoundBlaster USB-2.x to Type-C connected either ports) 
3. Suspend/resume device (either close the keyboard/device down) or insert/remove the USB headphones
Observe:

Expected result:
should not have any pop noise when suspend/resume device

Actual result:
A very loud pop noise occurs

Note: not reproducible on internal speakers or BT headphones

How frequently does this problem reproduce? (100%)

Bug: https://buganizer.corp.google.com/issues/120242487
 

Chrome OS Version:  11151.47.0, 71.0.3578.73 (beta) channel 
Android vers: 9
Devices: Nocturne DVT main4 (0751) and Eve

Steps To Reproduce:
1. Power on device with Whisker keyboard docked
2. Connect a USB stereo headphones (i use the SoundBlaster USB-2.x to Type-C connected either ports) 
3. Suspend/resume device (either close the keyboard/device down) or insert/remove the USB headphones
Observe:

Expected result:
should not have any pop noise when suspend/resume device

Actual result:
A very loud pop noise occurs

Note: not reproducible on internal speakers or BT headphones

How frequently does this problem reproduce? (100%)

Bug: https://buganizer.corp.google.com/issues/120242487