MacBook Pro beeps repeatedly when unlocked

Help! My 16” M1 Pro occasionally starts beeping repeatedly non-stop when I unlock it, especially when connected to my Thunderbolt dock (keyboard, mouse, monitor, and power). The beeping stops only (iff) when I press a key.


Has anyone else experienced this? Any ideas on how to debug or fix it?


Next time it happens, how can I figure out what’s triggering the system alert (Beep) sound?


[Re-Titled by Moderator]

MacBook Pro 16″

Posted on Mar 13, 2025 01:32 AM

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1 reply

Mar 13, 2025 05:12 AM in response to HotPanda8

HotPanda8 wrote:

Help! My 16” M1 Pro occasionally starts beeping repeatedly non-stop when I unlock it,
especially when connected to my Thunderbolt dock (keyboard, mouse, monitor, and power). The beeping stops only (iff) when I press a key.

Has anyone else experienced this? Any ideas on how to debug or fix it?

Next time it happens, how can I figure out what’s triggering the system alert (Beep) sound?


re: < M1 Macbook Pro 16" >


unnamed thunderbolt Dock(?) —third party I would search for a firmware update

if in doubt search the developers website or contact their: Support/Help/FAQ/Known issues/compatibility/updates…



some thoughts—


unplug all non-essential peripherals when testing. It would be a matter of elimination adding back in one at a time and comparing your results


Bypass the Dock if that is your issue.


Compare with your your magsafe(?) unplugged from power...


compare a different port for USBC- charging cable...





A SafeBoot Start up your Mac in safe mode - Apple Support will sort many anomalies


Does a quick disk repair before it fully boots up, and certain system caches get cleared and rebuilt, third party system modifications and system accelerations are disabled temporarily.


Login and test. Reboot as normal and test. Caches get rebuilt automatically.



if you suspect a hardware issue try running the user diagnostic

Use Apple Diagnostics to test your Mac - Apple Support



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MacBook Pro beeps repeatedly when unlocked

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