Why is my MacBook Pro beeping when performing a keyboard shortcut?
Solution 1:
Restarting the Dock fixed it for me.
Open up Activity Monitor, locate the Dock process, and Quit the dock.
Solution 2:
On your Mac, choose Apple menu > System Preferences, click Sound, then click Sound Effects.
Find the alert sound that is causing the issue. When you click on it, it will play the sound effect. In my case, every time I used the keyboard shortcut cmd-shift-p - even though it was a valid shortcut in some apps - it made the alert sound from "Ping". I muted the Output volume for "Ping" and that solved the issue.
Solution 3:
It has just happened to me as well.
For me, it turned out that a specific app (VPN) has blocked the input from my keyboard. When I closed the app, the keyboard immediately returned to work properly (no reset was required).
Try to close apps that start-up with your Mac, perhaps one of them is taking control over your input.