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This is what works for me.
In /etc/services I have
vnc-640x480x8 5950/tcp
vnc-800x600x8 5951/tcp
vnc-800x600x16 5952/tcp
vnc-1024x768x16 5953/tcp
These correspond to the various resultions for VNC windows.
In /etc/inetd.conf I have
vnc-640x480x8 stream tcp nowait nobody.tty /usr/bin/X11/Xvnc Xvnc -inetd -query localhost -once -geometry 640x480 -depth 8
vnc-800x600x8 stream tcp nowait nobody.tty /usr/bin/X11/Xvnc Xvnc -inetd -query localhost -once -geometry 800x600 -depth 8
vnc-800x600x16 stream tcp nowait nobody.tty /usr/bin/X11/Xvnc Xvnc -inetd -query localhost -once -geometry 800x600 -depth 16
vnc-1024x768x16 stream tcp nowait nobody.tty /usr/bin/X11/Xvnc Xvnc -inetd -query localhost -once -geometry 1024x768 -depth 16
These arrange for VNC to be started at the appropriate resolutions.
The -query localhost tells the X server which Xvnc starts to send an XDMCP
query to localhost to get a display manager.
I use KDM on my system, and so I had to alter/etc/kde2/kdm/kdmrc to change
Enable=false to Enable=true
I also changed /etc/kde2/kdm/kdmrc/Xaccess to allow connections.
Also need to reload inetd (update-inetd may handle this in a package) and
restart kdm
You can then use a VNC connection to display 50 (i.e. systemname:50 in the
vnc viewer) to get a 640x480x8 session.
For GDM you need to change Enable=false to Enable=true in /etc/gdm/gdm.conf
(but I have not tested this to see if anything else is needed)
Using VNC this way has been useful for me - I hope it may be useful for
someone else also.
John Lines <john@paladin.demon.co.uk>
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