cannot open display from macos client with openvpn

Question

I am trying to connect to a redhat server from a macos client, using ssh and openvpn. Command line commands work fine (eg vim), but displays dont get displayed, eg while running firefox or gvim, and I get the error:

No protocol specified
E233: cannot open display

I did "xhost +" and "export XAUTHORITY=~/.Xauthority" on the macos client, and "export DISPLAY=:0.0" on the redhat server, but that did not solve the problem.

However, it is working when the client is ubuntu, so I guess the problem is on the macos client side.

BTW, when I run ssh after I did "xhost +", I get the warning:

Warning: untrusted X11 forwarding setup failed: xauth key data not generated

Any suggestions?

Answer 1

Answer is given here: instead of doing "ssh -X", do "ssh -Y". This is the short solution (which worked for me on Catalina + XQuartz), other longer solutions are also provided at this link.