ROOT x11 errors on Ubuntu 14.04

ROOT
1

Hello,

I am running ROOT remotely on a Red Hat Server through my laptop, which is running Ubuntu 14.04. I ssh using the -X flag, but when I try to open a TBrowser, I get the error:

root [0] TBrowser a Error in <TGClient::TGClient>: can't open display "localhost:15.0", switching to batch mode... In case you run from a remote ssh session, reconnect with ssh -Y

I have tried using -Y instead of -X and that didn’t fix the error. I have tried to examine the /etc/ssh/sshd_config file on the server, but I am unauthorized to view it. A while back when I was running the same code on OSX I wasn’t having these issues. Any other Ubuntu users encounter a similar problem? I have tried everything that I can think of and everything that google has suggested.

Thanks,
Jackson

2

Try to login to your remote server using “ssh -X -Y” and then in this new remote session window try to run “xterm” (see if you get any warnings / errors).
If the new remote “xterm” window got displayed, then try to run your “root” in it (and execute “new TCanvas()” or “new TBrowser()” in order to test its X11 graphics).

3

Hi,
you can follow the instruction of :


I think you lost the step of
  1. In Bash prompt, enter “export DISPLAY=localhost:0.0” to connect to Xming host over TCP/IP and enable UI apps from Bash
  2. Install x11-apps with “apt-get install x11-apps”
    Regards,
    Qian