xen discuss - Sep 2009 - Any idea on how to install a hvm on a remote system. -- unable to open display

Hi

I''m been trying to install an xvm instance on a remote system, but I
keep running into variations on ''unable to open display''

I''ve tried to use ssh -X but I''ve not been able to get it to
forward
when su''d to root.
1) ssh -X -l xadmin virtbox
 running cload etc works fine.
2a
  i.  su -
  ii. cp .Xauthority ~xadmin/.Xauthority
  iii. setenv DISPLAY localhost:10
  iv. xload
   Fails:
    X11 connection rejected because of wrong authentication.
    X connection to localhost:11.0 broken (explicit kill or server shutdown).

2b
  i.  sudo su -
  ii. xload
  X11 connection rejected because of wrong authentication.
 X connection to localhost:11.0 broken (explicit kill or server shutdown).

2c
 i.  su -
 ii. setenv DISPLAY laptop:0
 iii. xload
   Error: Can''t open display: laptop:0
   (''xhost +'' had been run on the laptop)

Any ideas of where I might find an explanation or hint to how to fix this.

When I run the virt-install as root then I can''t connect to the
''localhost:5900'' as xadmin.
--
vncviewer localhost:5900

VNC Viewer Free Edition 4.1.3 for X - built Aug 18 2009 19:15:06
Copyright (C) 2002-2008 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.

Thu Sep 17 13:03:50 2009
 CConn:       connected to host localhost port 5900
 main:        End of stream
--

Hints are warmly welcomed.

  Henry

On Thu, Sep 17, 2009 at 6:32 PM, Henry Pepper <henrypepr@gmail.com>
wrote:
> Hi
>
> I''m been trying to install an xvm instance on a remote system, but
I
> keep running into variations on ''unable to open display''
>
> I''ve tried to use ssh -X but I''ve not been able to get it
to forward
> when su''d to root.
I haven''t played around much with it, but doing one of these :
- ssh root@...
- ssh as normal user, then "sudo virt-install  ..." (instead of
"su -"
or "sudo -s") should work.

As an alternative you could also modify domU config file (or
xend-config.sxp) to have vnc listen on 0.0.0.0 instead of localhost.

-- 
Fajar

Think this works well unless I''m mistaken:
http://www.sun.com/bigadmin/jsp/descFile.jsp?url=descAll/xauth_f__home_${log

-Andrew

Fajar A. Nugraha wrote:
> On Thu, Sep 17, 2009 at 6:32 PM, Henry Pepper <henrypepr@gmail.com>
wrote:
>   
>> Hi
>>
>> I''m been trying to install an xvm instance on a remote system,
but I
>> keep running into variations on ''unable to open
display''
>>
>> I''ve tried to use ssh -X but I''ve not been able to
get it to forward
>> when su''d to root.
>>     
>
> I haven''t played around much with it, but doing one of these :
> - ssh root@...
> - ssh as normal user, then "sudo virt-install  ..." (instead of
"su -"
> or "sudo -s") should work.
>
> As an alternative you could also modify domU config file (or
> xend-config.sxp) to have vnc listen on 0.0.0.0 instead of localhost.
>
>

On Thu, Sep 17, 2009 at 01:32:56PM +0200, Henry Pepper wrote:
> I''m been trying to install an xvm instance on a remote system, but
I
> keep running into variations on ''unable to open display''
This is a general XAUTHORITY problem, even with xhost +, you can''t
access the display as a different user. I''m not sure, but copying the
user''s ~/.Xauthority to /root and chowning it might help.

regards
john