This works if you've enabled root logins via ssh. If you're forced to disable remote root logins, like I am, it takes a bit more bouncing around. You may or may not require the -Y, though the programs I'm using do not and the security team frowns upon using it. Effectively, the difference (on systems where ForwardX11Trusted no) is straight -X only forwards the window, whereas -Y gives you access to all of the X extensions. Some apps don't work or are wonky without trusted x11 forwarding. As you can see, it's a deep rabbit hole, and dependent on the environment you're operating in. Praise unix for giving us options! On Thu, Apr 19, 2018 at 5:06 AM, wrote: > I just do: > ssh -fCXY root@turboviking /usr/bin/gnome-calculator > And get my banana... :) > ET > > > Mark Phillips writes: > >> There is an application I need to run as root on my Linode server, but it >> has to run in a gui. >> I have ssh and X11 forwarding set up between my Ubuntu 14.04 system and my >> Linode (swordfish). It works just great for a non-root user (xcalc, >> xconsole, the application I need to run, etc). However, when I try to run >> the application on the server as root, I get the error message "X11 >> connection rejected because of wrong authentication." For xcalc running as >> root, I get >> X11 connection rejected because of wrong authentication. >> Error: Can't open display: swordfish:10.0 >> I have tried all sorts of google solutions - copying the user's >> .Xauthority >> to /root/ (also changing the ownership and permissions). But I just can't >> seem to log into swordfish as a normal user using ssh -X, su to root, and >> get the X11 forwarding to work. >> I also went so far as to install vnc4server on the Linode, xfce window >> manager, and vnc4viewer on my Ubuntu machine. That all works when I access >> the vnc server as a normal user, but I can't get any X11 apps to run as >> root (ie from a root command line in a terminal in the vnc window). The >> error message when I try to run xcalc or other X11 apps is "No protocol >> specified. Can't open display :1". >> What are the special Linux guru magical incantations/spells to make X11 >> forwarding work for root? >> Thanks! >> Mark >> > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org > To subscribe, unsubscribe, or to change your mail settings: > http://lists.phxlinux.org/mailman/listinfo/plug-discuss > -- James McPhee jmcphe@gmail.com