Pattern to record: The device works after reboot but not after sleep.

Trace video, input and output separately

Identify the USB webcam selected in the call application and test video separately from any built-in microphone. Bluetooth headset audio is a different path and does not explain USB camera capture failure by itself. One possible explanation is that the accessory or driver does not reinitialise after low-power transition.

Compare the failing connection

1. Compare another USB port and application, check privacy permission and test sustained capture.
2. Compare cold start, reconnect and sleep while reviewing driver events.

Before changing the setup

Disconnect any cable with crushed insulation or an overheating camera. Repeated unplugging can wear connectors without addressing the state fault.

Restore the intended function

If the checks support this cause, update the correct driver or firmware and repair supported power settings. Verification should cover video, microphone if fitted, multiple applications, sleep and a sustained call.

For an assessment of your computer and external webcam, contact AEPC in Burswood or call 027 908 8880. Provide the model and the conditions that reproduce this problem. Workshop visits are by appointment.