X11 Macos Catalina

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I cannot open X11 when I connect to OS X Sierra from OS X El Capitan (or from any older OS Xs).

Once I 'ssh -X' or 'ssh -Y' into Sierra I get

Support Communities / Mac OS & System Software / macOS High Sierra. Putty on Mac OS Catalina. Including X11 tunneling, generic tunnels, Jump Hosts, running.

Mac

'X11 forwarding request failed on channel 0'

If I type 'echo $DISPLAY' I get an empty line.

Macos


I tried to follow the suggestions from

but that discussion applied to Yosemite. I still tried to modify the Yosemite file /etc/sshd_config which I think is now the Sierra file /etc/ssh/sshd_config and add the lines


X11Forwarding yes

X11DisplayOffset 10

X11UseLocalhost no


although I noticed the Sierra file has a bit different names, e.g., ForwardX11 instead of X11Forwarding.

How Large Is Macos Catalina

X11 on macos catalina


Adding the above three lines did not solve the problem. Interestingly, when I tried to restart the ssh service following the suggestions from the above discussion:


cd /System/Library/LaunchDaemons

launchctl unload ssh.plist

launchctl load ssh.plist


I noticed the following: after typing 'launchctl unload ssh.plist' I got


'Could not find specified service'


and after typing 'launchctl load ssh.plist' I got

Macos


'Service is disabled'

X11 On Macos Catalina


I then rebooted the computer but that did not help either.


I would appreciate any input.

Mac Pro, macOS Sierra (10.12)

Posted on Jun 9, 2017 11:43 AM