I do not understand what is keeping me from making an X11 tunnel to my Mac at home, which is running OS X 10.10.2. I'm getting this (hostnames redacted for privacy):
cook47@rcmac (~ ): ssh -Y mymac
X11 forwarding request failed
Last login: Thu Apr 9 11:12:13 2015 from xxx.xxx.xxx
In my sshd_config I have set X11Forwarding yes, and I tried to crank up the debugging with LogLevel DEBUG3 but I don't see much in the system log. Also, I tried restarting X11.app but no changes. Any suggestions on how to troubleshoot this?
OK, never mind, I found it. I was using a trick (ControlMaster) in my ssh config file to share ssh connections, so my new connections were reusing an old connection.