Why can't I start a GUI program on the default `$DISPLAY` on a remote ssh server host?












0















I ssh to a remote host.



In the shell created by sshd on the remote host, why can't I start a GUI program on the default $DISPLAY



$ eog

Unable to init server: Could not connect: Connection refused



(eog:31542): Gtk-WARNING **: 23:11:16.793: cannot open display: 



$ echo "$DISPLAY"



$


while specifying explicitly $DISPLAY=:0 creates a window on the remote host?



$ DISPLAY=:0 eog



(eog:31546): dbind-WARNING **: 23:11:42.415: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files


Isn't :0 the default value of $DISPLAY?






ssh x11 display







share|improve this question





























    0















    I ssh to a remote host.



    In the shell created by sshd on the remote host, why can't I start a GUI program on the default $DISPLAY



    $ eog
    
Unable to init server: Could not connect: Connection refused
    

    
(eog:31542): Gtk-WARNING **: 23:11:16.793: cannot open display: 
    

    
$ echo "$DISPLAY"
    

    
$


    while specifying explicitly $DISPLAY=:0 creates a window on the remote host?



    $ DISPLAY=:0 eog
    

    
(eog:31546): dbind-WARNING **: 23:11:42.415: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files


    Isn't :0 the default value of $DISPLAY?






    ssh x11 display







    share|improve this question



























      0












      0








      0








      I ssh to a remote host.



      In the shell created by sshd on the remote host, why can't I start a GUI program on the default $DISPLAY



      $ eog
      
Unable to init server: Could not connect: Connection refused
      

      
(eog:31542): Gtk-WARNING **: 23:11:16.793: cannot open display: 
      

      
$ echo "$DISPLAY"
      

      
$


      while specifying explicitly $DISPLAY=:0 creates a window on the remote host?



      $ DISPLAY=:0 eog
      

      
(eog:31546): dbind-WARNING **: 23:11:42.415: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files


      Isn't :0 the default value of $DISPLAY?






      ssh x11 display







      share|improve this question
















      I ssh to a remote host.



      In the shell created by sshd on the remote host, why can't I start a GUI program on the default $DISPLAY



      $ eog
      
Unable to init server: Could not connect: Connection refused
      

      
(eog:31542): Gtk-WARNING **: 23:11:16.793: cannot open display: 
      

      
$ echo "$DISPLAY"
      

      
$


      while specifying explicitly $DISPLAY=:0 creates a window on the remote host?



      $ DISPLAY=:0 eog
      

      
(eog:31546): dbind-WARNING **: 23:11:42.415: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files


      Isn't :0 the default value of $DISPLAY?






      ssh x11 display




      ssh x11 display






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 9 mins ago







      Tim

















      asked 15 mins ago









      TimTim

      27.7k78265483




      27.7k78265483






















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