Hi there! command + z and also cmd V, C and X not working nut only while using the left cmd key

Hi! I have this crazy problem.

These key combinations are not working,

but this only happens with the left command key

cmd + z

cmd + v

cmd + c

cmd + x

cmd + n

cmd + tab for toggling

(althou toggling with the command tab does not work with the right cmd key either.)


All these keys are actually working perfectly by themselves


To help solve the issue I did all I have found on the internet and here in Apple Com., but nothing has helped.

I have not installed anything in a long time and have not found any problems related to that.


-Restarting the computer

-Showing keyboard and emoji viewer in menu bar

-Restored defaults in keyboard shortcuts

-Reset PRAM.

-Done -killall pboard- through both Terminal and Activity monitor

-Also tried to reset the System Management Controller (SMC) on my Mac (Desktop)

-I cannot do a recovery since I have nothing backed up to recover


Any help will be appreciated


System: Mac high Sierra (10.13.6)

Graphics: Intel Iris Plus Graphics 640 1536 MB









Posted on Aug 16, 2021 5:32 AM

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Question marked as Top-ranking reply

Posted on Aug 16, 2021 8:59 AM

I'm reasonably certain it's a logic board fault or maybe just debris of some sort.


Safe Boot, (holding Shift key down at startup), does the problem occur in Safe Mode? Could take 10 minutes.


Safe mode attempts to repair Disks & clears lots of caches & loads safe Drivers, & prevents loading of 3rd party extensions, so if Safe Mode works try again in regular boot.


To find out if it's system wide or user specific, try this...


Open System Preferences>Users & Groups, unlock the lock, click on the little plus icon, make a new admin account, log out & into the new account.


Does it work in the new account?

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4 replies
Question marked as Top-ranking reply

Aug 16, 2021 8:59 AM in response to Alquemius

I'm reasonably certain it's a logic board fault or maybe just debris of some sort.


Safe Boot, (holding Shift key down at startup), does the problem occur in Safe Mode? Could take 10 minutes.


Safe mode attempts to repair Disks & clears lots of caches & loads safe Drivers, & prevents loading of 3rd party extensions, so if Safe Mode works try again in regular boot.


To find out if it's system wide or user specific, try this...


Open System Preferences>Users & Groups, unlock the lock, click on the little plus icon, make a new admin account, log out & into the new account.


Does it work in the new account?

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Hi there! command + z and also cmd V, C and X not working nut only while using the left cmd key

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