On Fri, 10 Jun 2011 06:11:09 +0200, Mark Panen <mark.panen@gmail.com> wrote: > > "synaptic > X11 connection rejected because of wrong authentication. > > (synaptic:12730): Gtk-WARNING **: cannot open display: localhost:10.0" Try "ln -sf /home/mark/.Xauthority /root/" as root if mark is the user logged in via ssh -X. Note that this link is then permanent and if you wish to revoke roots access to your display you can rm /root/.Xauthority Peter