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XEN guest cannot open display

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Hello all,

My setup is :

[XEN - dom0]
installed directly on hardware [ubuntu 12.04.5 server x64bit] , using it on CLI Mode - no GUI installed

[domU - guest] HVM guest created via configuration file, I Determine the started DomU port attached with :

# xm list --long <domU_Name> | grep location

but when i try to connect to guest with vinagre after exporting $DISPLAY to 127.0.0.1:5900 (since I am using Ubuntu ) I get the error-warning :

Code:

:~$ sudo vinagre 127.0.0.1:5900
:~$ (vinagre:process_number) : Gtk-WARNING **: cannont open display

If i type (found it on google):
Code:

:~$ sudo vinagre 127.0.0.1:5900 >/dev/null 2>&1 &1
I get this >>> : [1]<process_number>

and then nothing happens..

If I try to connect to domU via console (sudo xm console <domainU name>) System stucks and I can't type or do something just reset via desktop button

Please ask me if you need further information about the problem .. Thanks in advance

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