Karabiner-elements: Does not work on MacOS Catalina

[phoffer]

When opening the KeyEventViewer, I am prompted to allow permission for "Input Monitoring" in the Privacy settings. This appears to be a new category. Opening Karabiner-Elements does not trigger this prompt. Even after manually adding Elements to the list, it still does not work.

Is there any other info I can provide or anything I can do to assist? I can attach my modifications if helpful, I have 1 simple and 1 complex. FWIW, Event Viewer does detect key presses.

EDIT: @saagarjha has figured out a workaround that gets it to work. Unless requested, I'll leave this open until it's officially fixed, hopefully that will help people find it.

Workaround: add /Library/Application Support/org.pqrs/Karabiner-Elements/bin/karabiner_grabber to the list.

Oh, and sudo killall karabiner_grabber.

[saagarjha]

I'm seeing TCC deny IOHIDDeviceOpen in the Console: let me see if there's a way to grant it permission for this.

[saagarjha]

Workaround: add /Library/Application Support/org.pqrs/Karabiner-Elements/bin/karabiner_grabber to the list.

[phoffer]

@saagarjha that did not work for me. I restarted Elements, do I need to restart my system for some reason? Just to confirm, did you add that to the Input Monitoring list?

[saagarjha]

Oh, and sudo killall karabiner_grabber.

[tekezo]

Thank you for feedback!

I guess you also have to do it with karabiner_observer though I didn't confirm this issue, yet.
(I'll confirm soon.)

[saagarjha]

Yes, you do, based on the TCC warnings. I didn't care enough to add it, since it wasn't essential to getting Karabiner working (and sudo killall karabiner_observer, etc.)

[grigoryvp]

How to add anything into the "Input monitoring"? there is no "+" button like in other categories:

[saagarjha]

@grigoryvp Try opening Karabiner-EventViewer.

[Oyami-Srk]

Adding karabiner_grabber works for me at first. But after I install the new version(12.4.8), It won't work. And doing the same thing to karabiner_observer make it work again. Apple's changing is make a lot of software unusable, LOL.

[kAzec]

For some reason the permission prompt is not showing up for me when I open Karabiner-EventViewer. And EventViewer says "EventViewer failed to observe keyboard devices". So I cannot find out a way to use
saagarjha's method as stated above.

Anyway, turns out that you can add karabiner_grabber and karabiner_observer to Accessibility apps. And after sudo killall-ing both processes, Karabiner-Elements is working for me again.

[grigoryvp]

@grigoryvp Try opening Karabiner-EventViewer.

That helps, thanks!

[grigoryvp]

Update: "shell_command", like "open '/Applications/Safari.app'", stops working after few minutes. Keyboard rebinding countinues to work. Any way to troubleshoot "shell_command" issue? Some logs or anything?

[yangchenlarkin]

Workaround: add /Library/Application Support/org.pqrs/Karabiner-Elements/bin/karabiner_grabber to the list.
@saagarjha
I cannot add it to the list, because my System Preferences triggers an error. Do you know how can I add the app by terminals?

[monsteryip]

@grigoryvp Try opening Karabiner-EventViewer.

thx!!!

[saagarjha]

@yangchenlarkin I doubt there's an easy way to do this from the Terminal, since it would obviate the need for TCC in the first place.

[mkleehammer]

So I followed the instructions here and it worked for a while, but stops working at some point. It might be when it goes to sleep - I haven't noticed the pattern yet. Using sudo killall on grabber and observer, then restarting KE works.

First, any idea why it might stop working?

Second, while the workaround is necessary, what's the smallest subset that should work? Just killing grabber? What restarts grabber? Does it restart on its own while the KE gui is running or does restarting the GUI do that? (I haven't dug in yet. Sorry if this is an obvious question.)

[sean-clayton]

For me, my caps_lock -> left_command + left_control + left_option keybind no longer works in 10.15 beta (karabiner elements version 12.4.8).

I followed the instructions, but still not working :(

EDIT: After following these steps it did work! https://github.com/tekezo/Karabiner-Elements/issues/1867#issuecomment-498556572

[grigoryvp]

It stops working for me after some time, too

[saagarjha]

@mkleehammer I can reproduce your error, as well as the "fix" you've suggested. I'm getting a new error in the log this time: grabber_client error: Connection reset by peer. @tekezo any ideas what would be causing this?

[cumanzor]

It stops working for me after some time, too

It seems to stop working when disconnecting / connecting an external usb keyboard for me. My temp workaround is restarting the grabber service: sudo killall karabiner_grabber

[ribilynn]

Same problem here. Using workaround is helpful for a while but become not working after some time. Trying reinstall karabiner, delete and add grabber to Settings again, still can't work. Log has some records: [warning] [grabber] (my all external mouse and keyboard) is not observed yet. Please wait for a while.

[fangk]

my System Preferences triggers an error

login Guest and create another user in same group, new user won't trigger error and the setting is for group.

[YOnoda]

I had the problems as @saagarjha mentions, but after reinstalling Karabiner-Elements from scratch worked like a charm.

[activaigor]

super working solution! thanks for sharing it!

[activaigor]

super working solution! thanks for sharing it!

[kylekeesling]

Running on Catalina Beta 2:

In order to fix the F-key/media playback buttons, I needed to add the following entries to the Security & Privacy > Privacy > Input Monitoring list:

• /Library/Application Support/org.pqrs/Karabiner-Elements/bin/karabiner_grabber
• /Library/Application Support/org.pqrs/Karabiner-Elements/bin/karabiner_observer

Hope that helps anyone else that may have been still struggling!

[ribilynn]

Follow @kylekeesling 's advice, add not only grabber but also observer to Input Monitoring, it works again... Magic. Thanks!

Update: not working again

[leowu4ever]

Running on Catalina Beta 2:

In order to fix the F-key/media playback buttons, I needed to add the following entries to the Security & Privacy > Privacy > Input Monitoring list:

• /Library/Application Support/org.pqrs/Karabiner-Elements/bin/karabiner_grabber
• /Library/Application Support/org.pqrs/Karabiner-Elements/bin/karabiner_observer

Hope that helps anyone else that may have been still struggling!

Can't locate org.pqrs in my drive. Is there anything wrong with my installation? I reinstalled it

[oschrenk]

Had to combine some steps from this step to make it work for. It will still be broken after waking up from sleep (see below for details). Works good enough for me until the amazing @tekezo can fix it for good - waiting for the Github sponsoring opportunity for this repo )

I needed to open Karabiner-EventViewer.app prompts me to add permission for Karabiner-EventViewer.app in the “Input Monitoring” category of “System Preferences > Security & Privacy > Privacy” settings. I could not add anything to that category before.

( thanks @saagarjha )

I then added

/Library/Application Support/org.pqrs/Karabiner-Elements/bin/karabiner_grabber
/Library/Application Support/org.pqrs/Karabiner-Elements/bin/karabiner_observer

( thanks @kylekeesling )

to that list and then I had to restart both processes. I do this using

or simply

sudo killall karabiner_observer karabiner_grabber

You have to do that every time your machine wakes up from sleep.

Edit ::

Prior method to kill the processes was

ps -ef | egrep karabiner_observer\|karabiner_grabber | grep -v grep |  awk '{print $2}' | xargs -I _ sudo kill _

Thanks @humblehacker . I think I just did killall karabiner_observer first which couldn't find the process. Then I constructed the complicated solution above, without thinking that it actually just needed sudo

[nikitavoloboev]

waiting for the Github sponsoring opportunity for this repo

No need to wait. You can donate already.

https://pqrs.org/osx/karabiner/pricing.html

But I agree, I would love to have a monthly payment for Karabiner to @tekezo either with Patreon or GitHub.

[pbassham]

ps -ef | egrep karabiner_observer\|karabiner_grabber | grep -v grep |  awk '{print $2}' | xargs -I _ sudo kill _

This worked for me on beta 2 when nothing else did

[mkleehammer]

Same as above. Since I expect there will be a decent fix available sometime, I didn't spend a lot of time automating but I got this working.

First, I compiled WakeWatcher and put it in my path.

It runs a script named ~/.onwake if it exists and is executable, so I created and and put the command above into it:

#!/bin/sh
ps -ef | egrep karabiner_observer\|karabiner_grabber | grep -v grep |  awk '{print $2}' | xargs -I _ sudo kill _

This works great, but I have to run WakeWatcher once after logging in. I always have a terminal open so I run WakeWatcher & and it runs in the background. I briefly tried automating this part with Login Items and launchd but didn't find a quick satisfactory solution.

[humblehacker]

Wouldn't this work just as well?

sudo killall karabiner_observer karabiner_grabber

[mkleehammer]

Wouldn't this work just as well?

sudo killall karabiner_observer karabiner_grabber

That's what I used initially, but I wanted something that didn't require sudo for the automated solution.

[jojonki]

This workwround (adding karabiner_graber and karabiner_observer) worked in my environment :). Probably, Catalina and Karabiner are the latest so far.

• macOS Catalina 10.15 Beta
• Karabiner-Elements: 12.5.3

[olbrichj]

macOS Catalina 10.15 Beta 3
Karabiner-Elements: 12.5.0

works fine after adding both to the security settings. Survives a restart

An older version had problems after a few minutes with the mapping. Sometimes even after a restart.

[r3volution11]

FYI, in addition to sleep, the problem also occurs when connecting a new keyboard, wired or bluetooth for me. Killing the two tasks after connecting fixes the problem as well.

[davidbailey00]

For me, this fixed the problem:

1. Add karabiner_grabber and karabiner_observer to the input monitoring whitelist:

   

2. Run sudo killall karabiner_observer karabiner_grabber and wait ~10 seconds

I'm running macOS 10.15 Public Beta 2

Edit: also add karabiner_kextd to the input monitoring whitelist if you want capslock LED support

[kushagra391]

+1 to @davidbailey00.
sudo killall karabiner_observer karabiner_grabber
worked for me
sudo killall karabiner_grabber
alone doesnt work on catalina beta 3

[willyuewu]

also +1 to @davidbailey00
add those executables with permission and then restart them makes perfect sense.
Doing those on macOS Catalina 19A501i (beta 3).

But weirdly, I mainly us Karabiner for quick opening apps on the mac. All the third party apps I can still use Karabiner to launch them, but Apple apps (other than finder folders) are all inactive (like calendar, messages, console ...)

It also seems that after some typing (not sure at all), the app will stop translating the key press to complex modifications.

[r3volution11]

@willyuewu Apple apps are now in /System/Applications. The ones in /Applications folder appear to be something like symlinks. That could be your problem regarding Apple apps.

[willyuewu]

@willyuewu Apple apps are now in /System/Applications. The ones in /Applications folder appear to be something like symlinks. That could be your problem regarding Apple apps.

That works! THX!!

And it seems when Karabiner fails, do
sudo killall karabiner_observer karabiner_grabber
can make it work.

[blouloudakis]

macOS Catalina 10.15 Beta 3
Karabiner-Elements: 12.5.0

works fine after adding both to the security settings. Survives a restart

An older version had problems after a few minutes with the mapping. Sometimes even after a restart.

I have found that when you run an update ie move from beta 1 > beta 2 or beta 2 > beta 3 these get wiped and you have to add them again

[blouloudakis]

macOS Catalina 10.15 Beta 3
Karabiner-Elements: 12.5.0
works fine after adding both to the security settings. Survives a restart
An older version had problems after a few minutes with the mapping. Sometimes even after a restart.

I have found that when you run an update ie move from beta 1 > beta 2 or beta 2 > beta 3 these get wiped and you have to add them again

Scratch that every time i unplug my keyboard from my laptop i have to run sudo killall karabiner_observer karabiner_grabber

[tekacs]

I currently have to run sudo killall karabiner_observer karabiner_grabber every time I return to my MacBook Pro after locking it - on Catalina public beta, with all current updates applied.

[hologerry]

Complex modifications caps_lock to command+control+option+shift doesn't work on macOS 10.15 beta 4 (19A512f), tried the workaround.

[2019-07-17 12:21:53.637] [info] [grabber] Load /Users/Gerry/.config/karabiner/karabiner.json...
[2019-07-17 12:21:53.637] [info] [console_user_server] Load /Users/Gerry/.config/karabiner/karabiner.json...
[2019-07-17 12:21:53.639] [info] [grabber] core_configuration is updated.
[2019-07-17 12:21:53.639] [info] [console_user_server] core_configuration is updated.
[2019-07-17 12:21:53.640] [warning] [grabber] Apple Internal Keyboard / Trackpad (device_id:4294968891) is not observed yet. Please wait for a while.
[2019-07-17 12:21:53.640] [warning] [grabber] Apple Internal Keyboard / Trackpad (device_id:4294968885) is not observed yet. Please wait for a while.

[willyuewu]

Just updated to beta 4. The trick still works but now it lasts even shorter.
However, now the app can capture my input all the time instead of stop working entirely. But it just can't launch the functions should be triggered by my input.

[kotobuki]

I have been using 12.5.0, and I also updated to beta 4 (19A512f) yesterday. So far, I don't have to use the trick. On the previous beta, I had to use the trick after each unlocking.

[FBeccaria]

I tried the trick and it does not work (added k..grabber and k..observer to Input Monitor list and terminated both in Terminal with sudo killall several times). I am running version 12.5.3 and latest 10.15 Beta (19A512f).

[bomtailey]

Ditto with @FBeccaria. I added grabber and observer also to the accessibility list and no luck. The log continues to report "[warning] [grabber] Microsoft Sculpt Comfort Mouse (device_id:4294969413) is not observed yet. Please wait for a while."

[Vxider]

Update: "shell_command", like "open '/Applications/Safari.app'", stops working after few minutes. Keyboard rebinding countinues to work. Any way to troubleshoot "shell_command" issue? Some logs or anything?

Same problem from public beta1 to beta3, any ideas?

[limeless]

Can confirm this problem still exist in Catalina beta4 (19A512f) with Karabiner-Elements 12.5.0 / 12.5.3,
disable built-in keyboard option is still broken with all workaround above.

log:

[warning] [grabber] HHKB Professional (device_id:4296082982) is not observed yet. Please wait for a while.
[warning] [grabber] Apple Internal Keyboard / Trackpad (device_id:4295022378) is not observed yet. Please wait for a while.
[info] [grabber] (vendor_id:0x5ac, product_id:0x8600) (device_id:4295022412) is ignored.
[warning] [grabber] Apple Internal Keyboard / Trackpad (device_id:4295022386) is not observed yet. Please wait for a while.

[r3volution11]

I'm on the latest beta utilizing a bluetooth keyboard. The problem occurs more frequently now but the command line fix still works for me. For both disabling the internal keyboard and caps lock hyper key.

[JG-Park]

I can also see the same message and the function does not work.

Version 12.3.0 / Catalina Beta4(19A512f)

log :
`[2019-07-26 18:51:14.707] [error] [observer] grabber_client error: Connection reset by peer
[2019-07-26 18:51:14.707] [info] [observer] grabber_client is closed.
[2019-07-26 18:51:14.858] [info] [observer] grabber_client is connected.
[2019-07-26 18:51:14.858] [info] [observer] rescan devices...
[2019-07-26 18:51:15.292] [warning] [grabber] Magic Keyboard (device_id:4295212220) is not observed yet. Please wait for a while.
[2019-07-26 18:51:15.292] [warning] [grabber] USB Receiver (device_id:4294968430) is not observed yet. Please wait for a while.
[2019-07-26 18:51:15.293] [warning] [grabber] Magic Mouse 2 (device_id:4294968730) is not observed yet. Please wait for a while.
[2019-07-26 18:51:15.293] [warning] [grabber] USB Receiver (device_id:4294968428) is not observed yet. Please wait for a while.

[revolter]

I too get

[2019-07-27 14:45:20.729] [warning] [grabber] Apple Internal Keyboard / Trackpad (device_id:4294968385) is not observed yet. Please wait for a while.
[2019-07-27 14:45:20.729] [warning] [grabber] Apple Internal Keyboard / Trackpad (device_id:4294968175) is not observed yet. Please wait for a while.

and it doesn't work, even after trying all the workarounds mentioned here.

I'm on macOS 10.15 Beta (19A512f)

[neominik]

Has anyone tried Karabiner Beta v12.5.5? The release notes say, it is supposed to support Catalina.
I'd try it myself, but would like to prevent 6 hours of TimeMachine rollback, if possible ;-)

[revolter]

I will. Where could I download the beta from?

Yes, it finally works ❤️ But I had to add back my modification as the old one I think it was linked to a keyboard "instance" (physically, it's the same one) the Elements is not recognising it anymore:

[alikulov]

@revolter beta works fine for me

[bomtailey]

It's working for me as well. Haven't tried restarting without doing the "sudo killall" action. Great thanks to whomever fixed this.

[ppolang]

12.5.5 beta seems to work great even after waking up from sleeps. However, it doesn't seem to work when it wakes up from sleeps longer than 5 minutes or so.
Here is the log message where grabber failed.

[2019-07-29 16:35:10.301] [warning] [grabber] Apple Internal Keyboard / Trackpad (device_id:4294984559) is not observed yet. Please wait for a while.
[2019-07-29 16:35:11.161] [warning] [grabber] (vendor_id:0x5ac, product_id:0x8600) (device_id:4294984647) is not observed yet. Please wait for a while.

It starts to work again after _sudo killall_.
AND it works if device is put to sleep for a short period of time, where observer and grabber aren't invoked.

[limeless]

12.5.5 fix the issue, devices are grabbed properly.

[onemanstartup]

Yeah. Sometimes latest beta stop working

[bomtailey]

I also am finding that I need to periodically re-issue sudo killall to re-initiate grabbing

[jhoareau]

In 12.5.6, I still have to kill the processes after my Mac wakes up from sleep.

[krzysiek33plpl]

Hello, the same here. After MacBook is up i need to restart. Sudo kill command does not work at all.

[krzysiek33plpl]

Update! The newest beta seems to address the issue...

[naefl]

19A526H newest MacOS beta, still have to kill the processes on every wake

EDIT: With the Karabiner beta version 12.5.9, I no longer have to do it after every wake but only once on device start - big improvement

[Sn-Kinos]

If it didn't work with adding karabiner_grabber and karabiner_observer on Accessibility from /Library/....

NOT /Users/foobar/Library/...

It works on my mac.

[say8425]

sudo killall karabiner_observer karabiner_grabber

Should I kill these process each time?

[robinjection]

In 12.5.6, I still have to kill the processes after my Mac wakes up from sleep.

Where does one download these betas? (relative n00b here)

[revolter]

@robinjection https://pqrs.org/osx/karabiner/document.html#check-for-updates

[say8425]

Support macOS Catalina. - Version 12.6.0

Now I think this issue was fixed on version 12.6.0. Please close this issue.

[krzysiek33plpl]

Negative - It's still required the sudo kill command :(
K.

[gdbing]

Latest update (12.6.0) fixed it for me, without having to manually kill processes.

[krzysiek33plpl]

Nevertheless, I had to sudo kill this morning after opened my MacBook :(

[blouloudakis]

Had no issues after updating to 12.6 but today had to Sudo kill

On Tue, 20 Aug 2019 at 4:59 pm, krzysiek33plpl [e-mail]
wrote:

Nevertheless, I had to sudo kill this morning after opened my MacBook :(

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[krzysiek33plpl]

Had no issues after updating to 12.6 but today had to Sudo kill
…

So this means you HAVE the issue :)

[blouloudakis]

Yes but I had put it to sleep after installing 12.6 but once left to sleep
overnight the issue came back

On Tue, 20 Aug 2019 at 6:04 pm, krzysiek33plpl [e-mail]
wrote:

Had no issues after updating to 12.6 but today had to Sudo kill
… <#m_-760039347688248913_>

So this means you HAVE the issue :)

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[tekezo]

An issue around sleep: #1932

[gondalez]

I can confirm this is fixed for me as of v12.6.2 mentioned in #1932.
It survives a sleep for the first time since installing Catalina beta 1 😌

I don't think it's necessary to reinstall to see the fix, but this was my process in case others are interested:

• (Catalina beta 6)
• remove Karabiner by pressing uninstall in karabiner elements > preferences > misc
• remove all manually added karabiner_* processes from Input Monitoring in system prefs
• install Karabiner from the latest dmg
• install the latest beta

It's worth mentioning my keyboard settings were preserved after the reinstall.

Thanks @tekezo 🙏

[willyuewu]

I can confirm this is fixed for me as of v12.6.2 mentioned in #1932.
It survives a sleep for the first time since installing Catalina beta 1 😌

I don't think it's necessary to reinstall to see the fix, but this was my process in case others are interested:

• (Catalina beta 6)
• remove Karabiner by pressing uninstall in karabiner elements > preferences > misc
• remove all manually added karabiner_* processes from Input Monitoring in system prefs
• install Karabiner from the latest dmg
• install the latest beta

It's worth mentioning my keyboard settings were preserved after the reinstall.

Thanks @tekezo 🙏

Really seems working on my machine! Amazing!

[say8425]

After my MacBook sleep 2days, then my karabiner did not work. But I can found log from karabiner elements.

[2019-09-02 10:22:10.288] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:11.728] [error] [console_user_server] grabber_client error: No buffer space available
[2019-09-02 10:22:11.898] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:13.454] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:15.073] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:16.726] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:18.315] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:19.826] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:21.453] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:23.660] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:25.232] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:27.602] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:29.136] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:30.708] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:32.310] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:33.961] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:35.600] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:37.195] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:38.857] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:40.541] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:42.131] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:43.713] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:45.344] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:46.976] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:48.668] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:50.233] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:51.881] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:53.473] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:55.064] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:56.706] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:58.219] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:22:59.829] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:01.452] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:03.110] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:04.685] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:06.327] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:07.969] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:09.550] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:11.219] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:12.845] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:14.445] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:16.047] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:17.689] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:19.260] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:20.892] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:22.547] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:24.081] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:25.759] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:27.309] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:28.951] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:30.522] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:32.154] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:33.749] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:35.327] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:36.959] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:38.520] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:40.102] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:42.735] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:44.320] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:45.885] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:47.453] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:48.752] [error] [console_user_server] grabber_client error: No buffer space available
[2019-09-02 10:23:49.101] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:50.667] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:52.398] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:53.935] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:55.637] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:57.289] [error] [observer] grabber_client error: No buffer space available
[2019-09-02 10:23:58.867] [error] [observer] grabber_client error: No buffer space available

Fortunately killing process fix this issue sudo killall karabiner_observer karabiner_grabber

[cumanzor]

FYI: my configs were not applying when I upgraded to Catalina Beta 7 because I my .config folder was symlinked to another folder within my iCloud Drive. Grabber was failing with this message:

[2019-09-08 14:55:48.973] [error] [grabber] failed to open /Users/john/.config/karabiner/karabiner.json

Had to move the .config folder back to ~. This used to work on Mojave, so it may be a change regarding iCloud Drive permissions, or something else.

[codeek]

I still got no buffer space available error after i tried all of the solutions above.BTW,I upgraded to Catalina Beta 8

[paradoxally]

Still broken on Catalina b8, no buffer size available.

[ManuelAlanis]

Run xcode-select --install

[gibfahn]

Working for me on Catalina 10.15 (GA release).

[abduramann]

I upgraded my Mac to Catalina on Friday. I tried the steps below sequentially.
1- Update Karabiner to 12.7. Not worked
2- sudo things. The system couldn't find grabber and observer so I think no effect. Not worked
3- Update Karabiner to 12.7.2 Not worked
4- Restart Mac :) Worked

FYI

[silbernagel]

I've upgraded to Catalina as well.

• Running 12.7.0
• Have uninstalled and reinstalled Karabiner
• Have grabber and observer in the input-monitoring list.

Simple and complex modifications do not work. But I can get the function keys to be F* as standard. So at least something works.

[pascal468]

Hi. I've upgraded specifically to Catalina to try to get Karabiner working, but no, still no result.
Get also the message "EventViewer failed to observe keyboard devices" but have both Karabiner_grabber" and "observer" added to the Input monitoring, did the sudo killall for both, did a restart, but still this message when opening the Karabiner Eventviewer. So tips are welcome!

Thanks, Pascal

[fabriziobertoglio1987]

I did not have karabiner_observer in the list. Somehow closing all the apps, killing processes and maybe even restarting the system made it show up in the list of setting and karabiner re-started to work

[abduramann]

OK, discovered my issue. After sleep, Karabiner does not work. I restarted many times, did sudo kill things. No way.

[nealeyoung]

FYI: my configs were not applying when I upgraded to Catalina Beta 7 because I my .config folder was symlinked to another folder within my iCloud Drive. Grabber was failing with this message:

[2019-09-08 14:55:48.973] [error] [grabber] failed to open /Users/john/.config/karabiner/karabiner.json

Had to move the .config folder back to ~. This used to work on Mojave, so it may be a change regarding iCloud Drive permissions, or something else.

There is a workaround that allows you to keep the .config in the cloud, see this issue:
https://github.com/tekezo/Karabiner-Elements/issues/2032

[azinoviev]

OK, discovered my issue. After sleep, Karabiner does not work. I restarted many times, did sudo kill things. No way.

Same here. Works after reboot and stop working after sleep.

[iamWing]

OK, discovered my issue. After sleep, Karabiner does not work. I restarted many times, did sudo kill things. No way.

Same here. Works after reboot and stop working after sleep.

Same here, so as the bluetooth keyboard disconnected and reconnected.

[dzawadzk]

The same happens to me when switching between different OS users.

[zenVentzi]

Did a restart and it worked. Made it sleep from the sleep menu button on top, but then it worked again.

Interesting, I haven't re-installed Karabiner since the Catalina update, but I had to re-install XCode. So I guess for some this would fix it.

[bugtype]

Yes, you do, based on the TCC warnings. I didn't care enough to add it, since it wasn't essential to getting Karabiner working (and sudo killall karabiner_observer, etc.)

Thanks. it's work on!

[rr326]

If anyone still has this problem - I found uninstall (under Misc) and then reinstall worked for me.

[lazywhite]

How to add anything into the "Input monitoring"? there is no "+" button like in other categories:

maybe your mac system preference apps has a problem
just remove /Library/Application\ Support/com.apple.TCC/TCC.db
and reboot

[genesy]

Is this issue resolved? I'm on the fence with buying a new macbook pro because it comes preinstalled with catalina and theres no way to downgrade it

[robinjection]

It is not resolved. Some people say its fixed, some say its still broken. I got a Mac with Catalina installed and it works until I put it to sleep.

On Feb 18, 2020, at 3:58 PM, Gene Sy [e-mail] wrote:

Is this issue resolved? I'm on the fence with buying a new macbook pro because it comes preinstalled with catalina and theres no way to downgrade it

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[gibfahn]

I haven't seen this at all on Catalina, I did re-grant permissions when I updated, but since then everything has been working, and I use a bunch of complex modifications (and put it to sleep all the time) without any issues. Also installed on a new 16" MBP and everything works fine there too.

[genesy]

@gibfahn does that include when coming back from sleep? people are saying it happens after waking up

[gibfahn]

Yep, no issues resuming from sleep either. Not sure what issues others are seeing, but probably needs more info than just "broken for me on Catalina".

[robinjection]

Can you elaborate on what you mean by re-grant permissions? This is in the security system preferences? I did that as well and still have problems coming back from Sleep. karabiner_grabber and karabiner_observer are in my input monitoring and Karabiner-Elements.app has full disc access. Is there any other permission I need to set?

On Feb 20, 2020, at 5:30 AM, Gibson Fahnestock [e-mail] wrote:

I haven't seen this at all on Catalina, I did re-grant permissions when I updated, but since then everything has been working, and I use a bunch of complex modifications (and put it to sleep all the time) without any issues. Also installed on a new 16" MBP and everything works fine there too.

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[gibfahn]

karabiner_grabber and karabiner_observer are in my input monitoring and Karabiner-Elements.app has full disc access

That's all I have as far as I can tell. By re-grant permissions I mean that on the update they added karabiner_grabber and karabiner_observer to the Input Monitoring, and I had to grant those.

Short of uninstalling and reinstalling (and maybe removing and re-adding to System Preferences), I don't have any other ideas.

[crumley]

I continue to have a similar issue with Catalina, however sleeping is not a requirement. Specifically:

1. External usb Keyboard is plugged in and working great with Karabiner.
2. External keyboard is unplugged, then plugged in again.
3. External keyboard key strokes are not detected.
4. External keyboard is not listed under "devices" tab of karabiner.
5. Quit Karabiner. killall karabiner_grabber && killall karabiner_observer.
6. Unplug keyboard. Plug back in.
7. Keyboard key strokes now work.
8. Start karabiner and all is fine again.

[iRonin]

I have the same issue. Karabiner was working now it's not, all seems to be set up correctly:

[chenminhua]

Have the same issue.

[kopiro]

Same issue after upgrade to 10.15.4

[chanw9]

Adding grabber & observer did not help, log shows the keyboard is observed but it is not appearing in the device tab, any workarounds?

[Nowaker]

I'm literally waiting for people to report there's no issues on Catalina any more, and dang, it's been a long wait... Still on Mojave.

[kkarakk]

@Nowaker it works fine now. it's just that there are two types of prompts and one prompt doesn't do anything. another prompt shows up when you try and add keybinds to karabiner and that correctly adds karabiner_observer and karabiner_grabber to input monitoring section for you to activate.

i'm on 12.9.3

[mkleehammer]

I can confirm that I've seen no problems with 10.15.5 Beta (19F62f). I avoided it for a year or so, but thought I'd try again when I got a new Mac.

[zecanard]

I haven’t experienced a single issue on Catalina from 10.15.0 to 10.15.4.

[robinjection]

I just updated to 10.15.4, and since a restart a few days ago, I haven’t had issues with it.

But in the past, sometimes when my computer awakes from sleep is when the functions stop working.

On Apr 17, 2020, at 10:30 AM, Phong Le [e-mail] wrote:

I haven’t experienced a single issue on Catalina from 10.15.0 to 10.15.4.

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[spacesuitdiver]

Fresh install (12.9.0), new here, same issue with grabber not showing up, had to manually add it.

EDIT
I found the two permission dialogs buried behind all my other windows, this workaround is not necessary if you are diligent about that. It does seem like the permissions are being asked in sequence instead of parallel so there might be an improvement from a code perspective to at least prevent having to do this work around and having it show up in the list.

[iRonin]

Upgrading to 10.15.4 solved the issue for me (without touching Karabiner).

[txchen]

Seems 10.15.4 fixed the issue, haven't got it repro for a couple days.

[Nowaker]

Thanks for all the feedback, guys! Since it appears it's finally working, I'll be updating my wife's old laptop to Catalina first to test everything, and if it works fine, update my main laptop.

[Nowaker]

I upgraded my two old laptops and they are doing fine on Catalina. However, my 2018 MBP is not doing that great on Catalina. More details in this ticket: https://github.com/pqrs-org/Karabiner-Elements/issues/2274. (The problem described in the ticket happened 5 times while typing this comment. 4 erroneous repetitions and 1 unregistered event)

[prohtex]

Workaround: add /Library/Application Support/org.pqrs/Karabiner-Elements/bin/karabiner_grabber to the list.

Thank you! And Dear Apple, FUCK you for these insane restrictions.

[Dionisiy]

almost all applications don't work after update to 10.15.5
wtf?

[rhalukongor]

@Dionisiy

almost all applications don't work after update to 10.15.5
wtf?

I don't experience any issues with 10.15.5

[Nic0S]

I'm missing the + button on the Input Monitoring list, can't get it to show up. EventViewer crashes every time I open it. Any solution here?

[SHxKM]

After over a year of working perfectly, I'm getting logs for the correct key in EventViewer, I've registered non_us_backslash to be replaced with grave_accent_and_tilde()`, but suddenly nothing is happening and I'm getting §.

[RustleThyJimmies]

I don't know what everyone else usually uses Karabiner for, but I am a student trying to get this to work with Anki (spaced repetition flashcards program) and I bought an 8BitDo M30 Bluetooth controller from Amazon:
https://www.amazon.com/gp/product/B07MSN1NPC/

I read through ALL the comments and tried everything--enabled all devices (No product name & Apple Internal Keyboard) under the Devices tab in the program, enabled all permissions under Input Monitoring in Settings (for both Elements & EventViewer), restarted Mac (Catalina 10.15.5), reinstalled Karabiner. I know my controller is working because this Gamepad Tester website (https://gamepad-tester.com/) is registering all my commands perfectly while the controller is connected via Bluetooth. I just can't get Karabiner to register my inputs even though the test website does. I am supposed to get something like an option to add the buttons as I press them under Karabiner-EventViewer, but the program doesn't register them. Unlike the person who posted these screenshots for a similar scenario:
https://www.reddit.com/r/medicalschoolanki/comments/bksddz/anki_mac_os_13_one_handed_controller/

Any help or suggestions would be much appreciated. Thanks!

[TechnotronicOz]

After over a year of working perfectly, I'm getting logs for the correct key in EventViewer, I've registered non_us_backslash to be replaced with grave_accent_and_tilde()`, but suddenly nothing is happening and I'm getting §.

This... Why is this happening?

[GuiSim]

I just installed Karabiner Elements. Even though the guide says to check 'karabiner_grabber' under Privacy > Input Monitoring, it was not in the list.

Manually adding the grabber to the list solved it.

[bomtailey]

Installed everything as specified AFIK, still the Windows button on my Microsoft Sculpt Comfort Mouse is not getting captured (as it used to be). Running Big Sur

On Sep 20, 2020, at 3:25 AM, Guillaume Simard [e-mail] wrote:

I just installed Karabiner Elements. Even though the guide says to check 'karabiner_grabber' under Privacy > Input Monitoring, it was not in the list.

Manually adding the grabber to the list solved it.

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[bomtailey]

Sent the previous without completion. I’m running Big Sur 11.0 and if I go to System Preferences Keyboard, it does not recognize a virtual keyboard and if I run Karabiner-DriverKit-VirtualHIDDeviceClient, I get the display below. Any ideas or how I can see the report?

Thanks

On Sep 20, 2020, at 3:25 AM, Guillaume Simard [e-mail] wrote:

I just installed Karabiner Elements. Even though the guide says to check 'karabiner_grabber' under Privacy > Input Monitoring, it was not in the list.

Manually adding the grabber to the list solved it.

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[tekezo]

@bomtailey Did you enable your mouse?
https://karabiner-elements.pqrs.org/docs/manual/configuration/configure-devices/

[bomtailey]

Finally got it working, the last problem was the karabiner.json file (whose syntax I still don’t understand) and when I copied from an earlier machine, finally everything worked. My goal was to get the widows button on a Microsoft mouse to work.
Thanks for all who helped and suggested.
Tom

On Sep 29, 2020, at 2:52 PM, Takayama Fumihiko [e-mail] wrote:

@bomtailey https://github.com/bomtailey Did you enable your mouse?
https://karabiner-elements.pqrs.org/docs/manual/configuration/configure-devices/ https://karabiner-elements.pqrs.org/docs/manual/configuration/configure-devices/
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[SHxKM]

After over a year of working perfectly, I'm getting logs for the correct key in EventViewer, I've registered non_us_backslash to be replaced with grave_accent_and_tilde()`, but suddenly nothing is happening and I'm getting §.

This... Why is this happening?

Issue went away for a while but now it's back. Weird thing is that EventViewer is recognizing § as tilde, so from its perspective all is fine. (non_us_backslash is mapped to grace_accent_and_tilde)

[phoffer]

Issue creator here, I'm going to close because it's become a dumping ground for any random problem and the original issue of working on Catalina has long been fixed.

Any new issues, use issue search or create if necessary 👍

[jm9151821]

I can confirm it works, make sure you find all dialogue boxes asking for permission and enabling it on input monitoring

[isokrates]

I'm on Catalina 10.15.7 and Karabiner-Elements 13.1.0, and have tried to follow these instructions to no avail. Here's what I did:

• [updated to Catalina]
• [updated Karabiner-Elements]
• saw the following instructions and opened system preferences, where I did not see the option to 'Allow'

https://dl.dropboxusercontent.com/s/8z2hjgw4t94cs1f/Screenshot%202020-11-08%20at%2010.53.06.png?raw=1

• clicked 'Deactivate driver' and restarted

• clicked 'Activate driver', and got "Activation was failed. (error: 1)"

• added karabiner_grabber, karabiner_observer, Karabiner-Elements, Karabiner-EventViewer, and Karabiner-DriverKit-VirtualHIDDeviceClient to Accessibility _and_ Input Monitoring

• ran the appropriate sudo killall commands

• restarted Karabiner-Elements, only to see exactly the same messages

• retried the above three times, just in case

So I can't get it to work with any of the above steps. Anyone got any ideas?

[tekezo]

@isokrates
I cannot reproduce the System Preferences button issue, but I guess that is caused by corrupted macOS cache.

Does starting up in Safe Mode to clear cache solve the issue?
https://support.apple.com/kb/ht1455

[isokrates]

@tekezo going into safe mode worked—I am now very happy again! Thank you so much for your help, and for creating this amazing piece of software in the first place! 🤩

_For anyone with the same problem:_ I rebooted into safe mode, then pressed 'Activate driver', and got the success message (rather than the error code 1 message I was getting before). I then opened preferences and could click 'Allow'. I then rebooted to get out of safe mode, and it now works again!

[rfarine]

I've tried everything from this thread, including doing what @isokrates did...and also tried rebooting in safe mode. I've even tried building the repo locally to install, but I still never get the "Allow" button to show up in my System Preferences! Any help with this would be much appreciated!

[jm9151821]

@rfarine what mac os version are you using? I dont think it works on big sur.

[rfarine]

@rfarine what mac os version are you using? I dont think it works on big sur.

I'm on Catalina -- 10.15.7 ... :/

[jm9151821]

@rfarine hmmm, okay, this may sound odd, but you have to be inside 'security and privacy' and then perhaps switch to the option that says 'allow apps downloaded from app store and identified developers' - then when you click to install karabiner elements it should pop up (inside the security and privacy) to ask you to allow the app.

Hope this can help.

[rfarine]

@rfarine hmmm, okay, this may sound odd, but you have to be inside 'security and privacy' and then perhaps switch to the option that says 'allow apps downloaded from app store and identified developers' - then when you click to install karabiner elements it should pop up (inside the security and privacy) to ask you to allow the app.

Hope this can help.

Ah, that has been the case the entire time I've been debugging. That doesn't help unfortunately. I've tried everything in this thread. 😓