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My left command key is not working for certain key combinations, but it works fine by itself, and in some other combinations. e.g.

Fails:

  • left-cmd + tab (switch apps)
  • left-cmd + w (close window/tab)

Succeeds:

  • left-cmd + r (refresh)
  • left-cmd + s (save)
  • left-cmd + /* anything else I've tried */

Also Succeeds:

  • right-cmd + tab
  • right-cmd + w
  • right-cmd + /* anything else I've tried */

I've tried:

  • zap PRAM: still fails
  • restart: fails
  • safe mode: still fails
  • pulling my hair out: still fails

Could this be a keyboard hardward problem?

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3
  • You probably have some conflicting keybinding somewhere. Start with the software in this answer: apple.stackexchange.com/a/387057/119271 and see if you can see what's trapping the keys
    – Allan
    Commented Jul 28, 2020 at 23:55
  • @Allan That was the prime suspect, but failing in Safe Mode should have removed that possibility.
    – paiego
    Commented Jul 29, 2020 at 0:03
  • Not necessarily. If it's an Apple product, it's not going to disable it. Your custom keyboard shortcuts, text replacements, etc. are still present in Safe Mode.
    – Allan
    Commented Jul 29, 2020 at 0:04

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