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Re: [Xen-users] How to make KDE or Gnome available in DomU?

  • To: Jiri <xen@xxxxxxxxxx>
  • From: "Emre Erenoglu" <erenoglu@xxxxxxxxx>
  • Date: Sun, 2 Dec 2007 01:36:53 +0100
  • Cc: mark.furner@xxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Sat, 01 Dec 2007 16:37:47 -0800
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Hi Jiri, comments below:

Dear Emre.
Thank you for your help so far. I did not get anywhere since your last post.

What I want is to access domU directly. I don't dont want to use dom0 as
you sugested as Method number 1 (one).

All methods I mentioned give you access to DomU dirctly. In method 1, even if you connect to associated IP address and port # of Dom0, you will get DomU GUI.

Method 2 does not sound good neither. I could not find out how to do that.

you need to search in google for xvnc keyword , for example for ubuntu: https://help.ubuntu.com/community/VNC . Keywords are vnc, xvnc, x11vnc. All of them differ in their function and method. vnc is generic name, xvnc is a framebuffer that a second X server can run on, and x11vnc attaches to your running X to display it over the network.

Method 3, I would like to avoid NX server as VNC client is always
available everywhere. NX client not.

You can download NX client everywhere from www.nomachine.com, I'm sure there's a portable version for your USB key. VNC will be terribly slow over internet, only good in LAN.

What would like to have is simple running vnc-server in domU. Is there
anywhere any documentation how to do this in xen domU. I just cannot
believe that it is so hard to do this. If I cannot get into it remotely
there is no reason to run XEN virtual machines.

I think it's better to start doing it without any XEN involvement. After you understand the concepts and how to do it in several methods, you can apply the same in XEN setup.

Whatever I try I just cannot make it work. I cannot even start xserver.
I believe that is probably the problem?

Are you using Xen 3.1.0 or later? is the framebuffer loaded? do you have /dev/fb0 device? did you configure your xorg.conf to use the framebuffer?

als03:~# startx
xauth:  creating new authority file /root/.serverauth.1688

X: warning; process set to priority -1 instead of requested priority 0

X Window System Version 7.1.1
Release Date: 12 May 2006
X Protocol Version 11, Revision 0, Release 7.1.1
Build Operating System: UNKNOWN
Current Operating System: Linux als03 2.6.18-5-xen-amd64 #1 SMP Tue Oct
2 21:48:12 UTC 2007 x86_64
Build Date: 04 September 2007
        Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
Module Loader present
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Sat Dec  1 07:31:52 2007
(==) Using config file: "/etc/X11/xorg.conf"

Fatal server error:
xf86OpenConsole: Cannot open /dev/tty0 (No such file or directory)

XIO:  fatal IO error 104 (Connection reset by peer) on X server ":0.0"
      after 0 requests (0 known processed) with 0 events remaining.

Is here anyone who is accessing domU through VNC, but not from dom0?


did you search for this error message in XEN lists or in google? Some documentation that I've found in my searches:
http://lists.xensource.com/archives/html/xen-users/2005-06/msg00612.html   (this one looks old, there's now framebuffer console support in DomU to get X working).



Emre Erenoglu
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