If it's anything like my setup it'd be the swordfish/unix:11 MIT-MAGIC-COOKIE-1 00607ba4fc7c6a2ea9debc6ad5776376 so the xauth line run as root would be xauth add . 00607ba4fc7c6a2ea9debc6ad5776376 afaik, there's no way to make it permanent since it's regenerated when you ssh in. There's nothing to prevent you from setting up a simple shell script in your profile to do some wonkiness, but you'd be passing that hash around. I'm making the assumption you're doing ssh forwarding and not popping the old X listen ports. On Wed, Apr 18, 2018 at 6:18 PM, Mark Phillips wrote: > Great! > > I have this so far: > > mark@swordfish:~$ echo $DISPLAY > swordfish:11.0 > mark@swordfish:~$ xauth list > swordfish/unix:11 MIT-MAGIC-COOKIE-1 00607ba4fc7c6a2ea9debc6ad5776376 > swordfish/unix:10 MIT-MAGIC-COOKIE-1 892fa0c2d392d8517dd525a7bcdc212b > swordfish.phillipsoasis.com:1 MIT-MAGIC-COOKIE-1 > ce767df80405a8d280be4e258f06fed8 > swordfish/unix:1 MIT-MAGIC-COOKIE-1 ce767df80405a8d280be4e258f06fed8 > swordfish.phillipsoasis.com:10 MIT-MAGIC-COOKIE-1 > d635d049952882222e1b238f7a8d1fbd > swordfish.phillipsoasis.com:11 MIT-MAGIC-COOKIE-1 > cdb5f42e697aed89f9ff934ae36df625 > > So, which magic cookie goes with $DISPLAY=swordfish:11.0? > > Also, how do I make this permanent? Or, do I have to export the DISPLAY > and copy the magic cookie every time I su to root? > > Mark > > On Wed, Apr 18, 2018 at 5:31 PM, James Mcphee wrote: > >> ok. So you start on box1, ssh -X to box2. echo $DISPLAY. xauth list. >> su to user2 on box2. export DISPLAY=. xauth add >> $DISPLAY . . Launch X >> application. >> >> >> >> On Wed, Apr 18, 2018 at 5:21 PM, Mark Phillips < >> mark@phillipsmarketing.biz> wrote: >> >>> 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 >> >> --------------------------------------------------- >> 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 >> > > > --------------------------------------------------- > 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