Make sure when you press CMD+C your Edit menu in the top flashes, this indicates it works as expected.
If it doesn't, go to Keyboard settings in System Preferences and:
- Restore defaults Modifier Keys...,
- Restore defaults in Shortcuts tab,
- In App Shortcuts click the + button and test if Keyboard Shortcut input box will react on your combination.
If Edit menu flashes and it still doesn't work, then the first thing to do is to restart pasteboard service by the following commands:
launchctl stop com.apple.pboard
launchctl start com.apple.pboard
If still doesn't work, here are some other suggestions to troubleshoot the problem:
- Re-test in different applications just in case.
- Re-test if works when using contextual menu (without using the shortcut).
- Re-test alternative combination such as CMD+X for Cut instead.
- Run Console to see your System log queries if something obvious is happening.
Test if the Clipboard works from the terminal via:
$ echo test | pbcopy $ pbpasteIf Paste menu item is no more greyed out, then maybe it's a problem with Paste command.
If you're advanced user, use
dtrussorfs_usageto debug it, for instance:$ sudo fs_usage | grep -C4 MyAppWhereCopyDoesntWorkand then notice other apps which appearing exactly when you press the shortcut which potentially you could consider quitting for testing purposes.
Disable any recent programs that you run or restart your computer.
- Disable VoiceOver as suggested here.
- Force quit the Finder (e.g.:
killall -HUP Finder). - If still doesn't work, consider rebooting the system, especially in Recovery or Safe mode to re-test.
As for a workaround, you can install Karabiner app and remap your shortcuts by configuring private.xml file (see Misc tab). For more suggestion, please check the following posts:
- Remap Ctrl+C, Ctrl+V, and Ctrl-X only
- How can I reassign the copy/paste keyboard shortcuts?
I've been using an external keyboard with my macbook pro for almost a year now, until a couple of days ago when the command key suddenly does not work anymore (every other key works). The keyboard is fine and the command key works with other computers, but will not for some reason work with my macbook pro. The command key on the macbook itself still works though.
Any ideas on what could be causing this issue?
New problem. The keyboard shortcuts stopped working such as
MacBook Pro Butterfly - Left command key does not work
Why is my command key not functioning on … - Apple Community
On my MacBook Pro, serial #n F2W1WRM633, the command key is
Make sure when you press CMD+C your Edit menu in the top flashes, this indicates it works as expected.
If it doesn't, go to Keyboard settings in System Preferences and:
- Restore defaults Modifier Keys...,
- Restore defaults in Shortcuts tab,
- In App Shortcuts click the + button and test if Keyboard Shortcut input box will react on your combination.
If Edit menu flashes and it still doesn't work, then the first thing to do is to restart pasteboard service by the following commands:
launchctl stop com.apple.pboard
launchctl start com.apple.pboard
If still doesn't work, here are some other suggestions to troubleshoot the problem:
- Re-test in different applications just in case.
- Re-test if works when using contextual menu (without using the shortcut).
- Re-test alternative combination such as CMD+X for Cut instead.
- Run Console to see your System log queries if something obvious is happening.
Test if the Clipboard works from the terminal via:
$ echo test | pbcopy $ pbpasteIf Paste menu item is no more greyed out, then maybe it's a problem with Paste command.
If you're advanced user, use
dtrussorfs_usageto debug it, for instance:$ sudo fs_usage | grep -C4 MyAppWhereCopyDoesntWorkand then notice other apps which appearing exactly when you press the shortcut which potentially you could consider quitting for testing purposes.
Disable any recent programs that you run or restart your computer.
- Disable VoiceOver as suggested here.
- Force quit the Finder (e.g.:
killall -HUP Finder). - If still doesn't work, consider rebooting the system, especially in Recovery or Safe mode to re-test.
As for a workaround, you can install Karabiner app and remap your shortcuts by configuring private.xml file (see Misc tab). For more suggestion, please check the following posts:
- Remap Ctrl+C, Ctrl+V, and Ctrl-X only
- How can I reassign the copy/paste keyboard shortcuts?
One of your applications may utilize the cmd+c shortcut, which is not shown in system preferences.
I have GoldenDict installed and one of its hotkeys to "Use the following hotkey to translate a word from clipboard" is "cmd+c c", which brings this problem.
Solution: use another hotkey or disable it.
One of the most important key, left command key, is not working properly on my MacBook Pro 15" Late 2016 (butterfly keyboard). You can only imagine the struggle. I work as a programmer, so I write a lot. Having my key not recognising every 5th click is very painful.
I was wondering if there is anyone who has/had the same issue and perhaps managed to fix it. I sent my MacBook to Apple as it was still in warranty. After a month, I got the device back. The repair report noted that the keyboard was fixed by cleaning. Haha. MacBook was without warranty since it came back. I called Apple and said that the problem still persist. They basically told me to fuck off, because it was not in warranty anymore (I sent it to Apple a month before its expiration).
I am not sure whether it is hardware or software issue. A colleague of mine has the same MacBook. His issue is that 'b' clicks twice sometimes.
TL;DR - My command key does not recognise the click from time to time. Was wondering if anyone knows if that can be fixed.