[SOLVED] Zentyal Breaks X11 Forwarding

[ckibodeaux]

I have searched the forums and also a general web search to find a solution to fix X11 forwarding under Zentyal, but have been unable. I have replicated this problem on an installation from CD as well as from the PPA on a fresh server install. I will describe my steps and maybe someone can point out my error. Tests happened on a physical machine as well as a VirtualBox virtual machine.

1.) Fresh install of Ubuntu Server 12.04 with OpenSSH Server. After install run apt-get dist-upgrade to get latest packages.
2.) Test SSH connection. SUCCESS! Test forward of xeyes (an X11 utility). SUCCESS!
3.) Add the PPA Repository for Zentyal (have tried with 3.0 & 3.1 packages) and install zentyal-core.
4.) Test SSH connection. SUCCESS! Test forward of xeyes. SUCCESS!
5.) Install zentyal-software. Open browser and install DHCP, DNS, File Sharing & related modules. Configure modules.
6.) Test SSH connection. SUCCESS but with error "X11 forwarding request failed on channel 0"! Test forward of xeyes. FAIL with error "Error: Can't open display:"!

Also have noticed that if I leave the last successful run of xeyes in step 4 running and continue, the application keeps running uninterrupted but new apps will not open. Can anyone point me in the right direction?

[jbahillo]

Hello :

Could you try adding AddressFamily inet (if you are not using ipv4) to sshd options so it only listens on ipv4?

[ckibodeaux]

THAT DID IT! Hallelujah! I've been fighting with this problem for a couple months now. THANK YOU!

[jbahillo]

If you issue is solved, please stamp [solved ] on the tile of your post

[patmagee1024]

This fixed my issue as well. Here's the specifics for others.

Code: [Select]

cd /etc/init
nano ssh.conf
At the bottom of the file is the line calling sshd. Mine had -D as only option. I made it look like this:
exec /usr/sbin/sshd -D -4

because I only use IPV4. Save the file and exit. Then use

Code: [Select]

sudo service ssh restart
Disconnect your session (if you were remoted in) and reconnect via ssh. Mine started X11 forwarding for the first time since install.

Thank you jbahillo!

[robb]

patmagee: +1 karma from me for giving the lines in the config files to change. Saves some searching..