Power chime noise while MacBook is asleep.
No current cause information.
Workaround
The following workarounds can be used.
- Disable sleep on the MacBook. Go to System Preferences > Energy Saver > Prevent monitor from sleeping automatically when the display is off.
- Disconnect the USB-C cable from your Mac whenever you power off your system.
- Use the power adapter provided with your Mac to charge your system.
More Information
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