You don't say what OS's you're running or versions of X, but since KDE
3.4 is pretty recent I'll assume you're running a 2.6 kernel with latest
Xorg.
Here's my setup on a Red Hat Enterprise Linux 4 AS server using GNOME
instead of KDE.
Relevant RPMS:
kernel-smp-2.6.9-42.0.2.EL
vnc-4.1.2-1
xorg-x11-6.8.2-1.EL.13.37
libgnome-2.8.0-2
This setup allows connections to the native console (:0) display. It
allso allows multiple vnc client connections to any of several
geometry/color depth combinations. All these connections use XDMCP so it
looks as though the user connected from the console.
Below is my setup. Yours will be different, depending upon OS, installed
packages, and security setup.
Warning: Security settings in examples are very relaxed. You should
consider the security implications of your specific application.
################################
## Begin VNC Server on RHEL 4 ##
################################
## Legend:
... The appearance of an ellipsis indicates that the entries
to/from this point are insignificant or repeat.
=== Encloses part or all of the contents of a sample file.
--- Separates sections of a file or separates title or
heading from content
## First, download and install the latest VNC RPM at:
http://www.realvnc.com/download.html
## Ensure system security is set to allow VNC connections to ports
you've configured
5900 is default TCP port
I'm also using ports 5952 5953 5962 5963 5972 5973 5980
One simple way is:
===============
/etc/hosts.deny
---------------
ALL: ALL
===============
================
/etc/hosts.allow
----------------
ALL: 192.168.1. 192.168.2. 192.168.3. 192.168.32. 10.1.150.
================
## Ensure that your system is set to startup in run level 5 with XDM
(GDM)
============
/etc/inittab
------------
...
id:5:initdefault:
...
# Run xdm in runlevel 5
x:5:respawn:/etc/X11/prefdm -nodaemon
============
======================
/etc/sysconfig/desktop
----------------------
DESKTOP="GNOME"
======================
=====================
/etc/X11/gdm/gdm.conf
---------------------
[daemon]
AutomaticLoginEnable=false
AutomaticLogin=
TimedLoginEnable=false
TimedLogin=
TimedLoginDelay=30
Greeter=/usr/bin/gdmgreeter
RemoteGreeter=/usr/bin/gdmlogin
DefaultPath=/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin
RootPath=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin
User=gdm
Group=gdm
LogDir=/var/log/gdm
PidFile=/var/run/gdm.pid
PostLoginScriptDir=/etc/X11/gdm/PostLogin/
PreSessionScriptDir=/etc/X11/gdm/PreSession/
PostSessionScriptDir=/etc/X11/gdm/PostSession/
DisplayInitDir=/etc/X11/gdm/Init
XKeepsCrashing=/etc/X11/gdm/XKeepsCrashing
ServAuthDir=/var/gdm
BaseXsession=/etc/X11/xdm/Xsession
DefaultSession=default.desktop
UserAuthDir=
UserAuthFBDir=/tmp
UserAuthFile=.Xauthority
StandardXServer=/usr/X11R6/bin/X
Xnest=/usr/X11R6/bin/Xnest -audit 0 -name Xnest
[security]
AllowRoot=true
AllowRemoteRoot=true
AllowRemoteAutoLogin=false
RelaxPermissions=0
CheckDirOwner=true
[xdmcp]
Enable=true
HonorIndirect=true
DisplaysPerHost=4
PingIntervalSeconds=300
[gui]
GtkTheme=Bluecurve
[greeter]
TitleBar=false
ConfigAvailable=false
Browser=false
MinimalUID=500
Logo=
ChooserButton=true
BackgroundColor=#20305a
ShowGnomeFailsafeSession=false
ShowLastSession=false
GraphicalTheme=Default
GraphicalThemeDir=/usr/share/gdm/themes/
[chooser]
HostImageDir=/usr/share/hosts/
Hosts=
Broadcast=true
Multicast=false
[debug]
Enable=false
[servers]
0=Standard
[server-Standard]
name=Standard server
command=/usr/X11R6/bin/X -audit 0
flexible=true
[server-Terminal]
name=Terminal server
command=/usr/X11R6/bin/X -audit 0 -terminate
flexible=false
handled=false
[server-Chooser]
name=Chooser server
command=/usr/X11R6/bin/X -audit 0
flexible=false
chooser=true
=====================
## Add entries to /etc/services for display variations you will use
=============
/etc/services
-------------
...
# VNC Servers
vnc 5950/tcp # VNC Service (using defaults)
vnc1024x768x8 5952/tcp # VNC Service 1024x768, 8-bit color
depth
vnc1280x1024x8 5953/tcp # VNC Service 1280x1024, 8-bit color
depth
vnc1024x768x16 5962/tcp # VNC Service 1024x768, 16-bit color
depth
vnc1280x1024x16 5963/tcp # VNC Service 1280x1024, 16-bit color
depth
vnc1024x768x24 5972/tcp # VNC Service 1024x768, 24-bit color
depth
vnc1280x1024x24 5973/tcp # VNC Service 1280x1024, 24-bit color
depth
vnc1280x960x24 5980/tcp # VNC Service 1280x960, 24-bit color
depth
...
=============
## Create a VNC startup script for xinetd to start all necessary
services for your virtual VNC displays.
=================
/etc/xinetd.d/vnc
-----------------
# default: off
# description: VNC accepts connections from VNC viewers using XDMCP to \
# manage the connections.
## [50] Default options: Color Depth: 16 Geometry 1024x768
service vnc
{
flags = REUSE
protocol = tcp
socket_type = stream
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = -inetd -query localhost -once
-securitytypes=none
disable = no
}
## [52] Color Depth: 8-bit Geometry: 1024x768
service vnc1024x768x8
{
flags = REUSE
protocol = tcp
socket_type = stream
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = -inetd -query localhost -once -geometry
1024x768 -depth 8 -securitytypes=none
disable = no
}
## [53] Color Depth: 8-bit Geometry: 1280x1024
service vnc1280x1024x8
{
flags = REUSE
protocol = tcp
socket_type = stream
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = -inetd -query localhost -once -geometry
1280x1024 -depth 8 -securitytypes=none
disable = no
}
## [62] Color Depth: 16-bit Geometry: 1024x768
service vnc1024x768x16
{
flags = REUSE
protocol = tcp
socket_type = stream
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = -inetd -query localhost -once -geometry
1024x768 -depth 16 -securitytypes=none
disable = no
}
## [63] Color Depth: 16-bit Geometry: 1280x1024
service vnc1280x1024x16
{
flags = REUSE
protocol = tcp
socket_type = stream
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = -inetd -query localhost -once -geometry
1280x1024 -depth 16 -securitytypes=none
disable = no
}
## [72] Color Depth: 24-bit Geometry: 1024x768
service vnc1024x768x24
{
flags = REUSE
protocol = tcp
socket_type = stream
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = -inetd -query localhost -once -geometry
1024x768 -depth 24 -securitytypes=none
disable = no
}
## [73] Color Depth: 24-bit Geometry: 1280x1024
service vnc1280x1024x24
{
flags = REUSE
protocol = tcp
socket_type = stream
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = -inetd -query localhost -once -geometry
1280x1024 -depth 24 -securitytypes=none
disable = no
}
## [80] Color Depth: 24-bit Geometry: 1280x960
## (special for Dennis)
service vnc1280x960x24
{
flags = REUSE
protocol = tcp
socket_type = stream
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = -inetd -query localhost -once -geometry
1280x960 -depth 24 -securitytypes=none
disable = no
}
=================
## Setup X to use the VNC Native display server for the root console :0
(assumes that "vnc.so" is in your X11 modules path)
(Mine is /usr/X11R6/lib/modules/extensions/vnc.so)
==================
/etc/X11/xorg.conf
------------------
...
Section "Module"
...
Load "vnc"
EndSection
...
Section "Screen"
Identifier "Screen0"
...
Option "SecurityTypes" "VncAuth"
Option "UserPasswdVerifier" "VncAuth"
Option "PasswordFile" "/root/.vnc/passwd"
EndSection
...
==================
## As "root" user set a vnc password for the VNC "Native Display" server
vncpasswd
(creates /root/.vnc/passwd)
## You'll have to restart the X server and xinetd to get things rolling.
## You may be able to do this using <Ctrl><Alt><Backspace> at a login
prompt.
If you're not already setup to boot into run level 5 with a respawning
xdm you may need to do a system restart.
## You'll need to restart xinetd to get it to re-read the config files.
service xinetd restart
## Lastly, you need to test connections from another machine upon which
you've already installed a VNC Viewer (client).
################################
## Begin VNC Server on RHEL 4 ##
################################
On Mon, 2006-09-18 at 12:46, Christian Panten wrote:
> Hi all,
>
> I'm using KDE 3.4 and I want to connect to my desctop from another pc.
>
> My configuration:
>
> There is a pc (called: S) where all my programs run, also KDE.
> I login a thin-client (called: C) (IGEL). My X-Server is running here.
>
> >From my other pc (called L) I call 'vncviewer S:1'. My KDE configurations
> >allow attaching to the session. Now, L is connected to S via vnc.
>
> Keyboard and mouse works fine. But I have on L an black screen.
> I think the problem is the X-Server running on C.
>
> It's not possible to run a vncserver on C.
>
> Has anyone a solution for my problem?
> Is it possible to connect the my kde session via vnc?
>
> Best regards
> Christian
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