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I am using Mid 2015 15" MBP with Thunderbolt display and Apple Wired Keyboard. Recently after an update to macOS Mojave 10.14.6 certain keys on my Apple Wired Keyboard stopped working. Keys are: 1. Escape 2. Tilde / Back tick 3. Tab 4. Caps lock I have confirmed the same using Keyboard Event Viewer enter image description here

I have tried the following: 1. SMC reset using Cmd+ Opt + P + R 2. Rebooting the system 3. Adding a USB extension between mac and Apple keyboard 4. Tried on different USB ports

Any suggestion on what could be causing this?

  • And the same keys work on the MBP's own keyboard? Any chance of testing the keyboard on another Mac? – benwiggy Aug 13 at 21:02

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