Not sure what has happened -- maybe I upgrade my mac to 10.10.4 -- I found my cmd + shift + A is not working any more.

I tried to use the application Key codes to show the keypress, and found the strange thing: If I press cmd + shift + A, the A will have none effect!

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But if I press only cmd + A, or shift + A, the A is shown:

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Where is wrong?

  • Cmd/shift/anything else works? (I can confirm I do see the A in Key Codes when I try it… not that that's any help;) – Tetsujin Jul 7 '15 at 6:29
  • Any other chars with cmd+shift work, but A. Really strange – Freewind Jul 7 '15 at 15:46
  • I'd try another keyboard - eliminate hardware/software – Tetsujin Jul 7 '15 at 16:00
  • @Tetsujin Good suggestion, I will try it tomorrow – Freewind Jul 7 '15 at 16:30

Finally, I found the reason.

I use the Apptivate to set some global keyshort for some applications, and set cmd + shift + a to an application by mistake and later deleted that application. (But I totally forgot I have done this)

So for now, when I press cmd + shift + a, it captured by Apptivate, and which tries to call an non-existed application without any warning, and nothing happens on screen.

It's fixed when I removed that setting from Apptivate.

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