up vote 7 down vote favorite
1
share [g+] share [fb] 
   local$> echo $DISPLAY
   :0.0
   local$> ssh -X -i PEMFILE ec2-user@AMAZONEC2_AMI
   [ec2-user@REMOTE_AMI ~]$ echo $DISPLAY

   [ec2-user@REMOTE_AMI ~]$ sudo grep X11 /etc/ssh/sshd_config ~/.ssh/*
   /etc/ssh/sshd_config:#X11Forwarding no
   /etc/ssh/sshd_config:X11Forwarding yes
   /etc/ssh/sshd_config:#X11DisplayOffset 10
   /etc/ssh/sshd_config:#X11UseLocalhost yes

Hence the display is not forwarded. a command like emacs & for instance does not show the X11 window on the local desktop. Please advise.

link|improve this question
86% accept rate
2  
Did you restart your sshd after changing X11Forwarding to yes? – Olli Feb 22 '11 at 19:52
You can also check to see if there is any interesting warning/notes when you run ssh -vvvv -X -i ... – Alex Feb 22 '11 at 19:53
X11Forwading was set to yes from before. For -vvvv debug1: Remote: No xauth program; cannot forward with spoofing. Could this be the reason ? – Humble Debugger Feb 23 '11 at 15:51
feedback

2 Answers

up vote 8 down vote accepted

I did this:

sudo yum install xorg-x11-xauth.x86_64 xorg-x11-server-utils.x86_64

and I finally got a display variable and it all started to work!

link|improve this answer
this also worked for me. – xaxxon Dec 30 '11 at 1:42
worked for me - I ran the command exactly as presented, then I logged out, and logged back in using ssh -XY user@myinstance.com – Arrieta Feb 24 at 18:07
I had to reboot my instance in order to get sshd to start offering me X11 forwarding: simply restarting sshd wasn't enough. – crb Feb 27 at 13:48
feedback
up vote 0 down vote

Install from the above answer didn't work for my RHEL 6.2 EC2 instance. Here are steps that did work:

$ sudo yum groupinstall "X Window System"
$ export DISPLAY=localhost:10.0

# now disconnect and create a new SSH with -X option

link|improve this answer
feedback

Your Answer

 
or
required, but never shown
discard

Not the answer you're looking for? Browse other questions tagged or ask your own question.