无法打开x11显示屏：无法连接

Question

The server that supports the graphical display is different from the server I'm sshed into. When I try to open virtualbox, I get this message.

$ Failed to open the X11 display!  

When I try to startx, I get three error messages.

$ PAM authentication failed, cannot start X server

$ giving up.
$ xinit:  No such file or directory (errno 2):  unable to connect to X server
$ xinit:  No such process (errno 3):  Server error.

I don't know where the display variable is, as I'm very new to linux. Any straightforward advice and help would be appreciated.

Answer 1

Give option -X on command line to enable X11 forwarding (graphical interfaces).

ssh -X user@hostname

It can be also enabled per host basis by setting "ForwardX11" to "yes" in configuration file (~/.ssh/config). Support for X11 forwarding needs to be also enabled in the target server's sshd configuration file (/etc/ssh/sshd_config) with option X11Forwarding yes .

You should also know that there are some security implications in enabling the X11 forwarding. Read more from ssh and sshd man pages or here . If you control both server and client and trust both equally, there shouldn't be any problem in enabling the forwarding.