Re: [Xen-users] Video output/graphics in virtualized OSs

[Simon Capstick <simon@xxxxxxxxxxxxxxxx>]

P.E.Ahlquist J wrote:
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> On Monday 14 November 2005 02:17, Dirk H. Schulz wrote:
>
> > if I understand this thread right then setting up an xserver to transfer
> > video output to an external machine should be the same as without xen?
>
> yep... any of the traditional remote X methods: using ssh X-forwarding or 
> xnest or a good old "X -query [FQDN-domU] ...".   Just think of the guest
> as a headless X-app server.
>
> Xen delivers an ideal desktop dev cluster (on a shoestring budget).
I've been playing with xf4vnc (via xinetd) as the xserver running on the 
domU (rather than your workstation).  I then connect to the xserver on 
the domU using a vnc client e.g. tightvnc.  This has the advantage of 
better remote access (less bandwidth required then X over the network) 
and access from pretty much any operating system.  I have a KDE desktop 
running on a domU that is indistinguishable from my workstation except 
for the lack of peripherals, e.g. USB flatbed scanner (I need to read up 
a bit more on SANE and it's network features).
Below are a few notes on my setup.

Simon


Here's my file in /etc/xinetd.d/ ...
(I just connect to a different port to get different resolution desktops.)

service vnc1024
{
        disable = no
        socket_type = stream
        protocol = tcp
        wait = no
        user = nobody
        server = /usr/bin/xf4vnc
        server_args = -inetd -once -query localhost -geometry 1024x768 
-depth 16
        port = 5900
}

service vnc1280
{
        disable = no
        socket_type = stream
        protocol = tcp
        wait = no
        user = nobody
        server = /usr/bin/xf4vnc
        server_args = -inetd -once -query localhost -geometry 1280x1024 
-depth 16
        port = 5901
}

To use KDE I had to enable XDMCP in /etc/kde3/kdm/kdmrc ...
[Xdmcp]
Enable=true


One gotcha (xen 2.0.7 stable) that I had was xf4vnc would only connect 
to kdm when the DomU had an entry in /etc/hosts for itself (not 
localhost but the hostname).  I'm probably just being stupid somewhere 
or kdm isn't looking up the hostname (from dom0) correctly.
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