VNC and native X display with vnc.so [Was: Re: more Fedora Cookbook: VNC]


ok, dumb question time, but you knew that, right? :-)

On Tue, 22 Jan 2008, Les Mikesell wrote:

Robert P. J. Day wrote:

hmmmm ... i never tried that particular scenario, but i'm aware
now that the newer and better way to grab the native X display is
to use the vnc.so module. having said that, i've been unable to
get that to work, despite a couple readable online pages.

so, if anyone has an actual (heh heh) recipe for taking control of
a remote desktop using vnc.so, feel free to drop me a note -- i'll
test it, then wiki it for others.

I used it some versions back but I think the reason I quit was that
it quit working at some point in the switch to Xorg. The current
version seems to be named libvnc.so but I'm not sure if it is fixed
and I don't have anything later than FC6 to test.

yes, it's libvnc.so, here (on my F8 x86_64 system):

# rpm -qf /usr/lib64/xorg/modules/extensions/libvnc.so
vnc-server-4.1.2-23.fc8

so that looks good on the server side.

It should just be a matter of adding the Load statement in your
Xorg.conf and having a password file. This advice looks promising:
http://forums.fedoraforum.org/showthread.php?t=162314

actually, i was following along here:

http://www.realvnc.com/products/free/4.1/x0.html

and, in the spirit of trying to do as little as possible to get
something working initially, i made the following changes to
/etc/X11/xorg.conf on the server side (obviously disabling any
authentication as a first attempt):

=====
...
Section "Screen"
Identifier "Screen0"
Device "Videocard0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
Option "SecurityTypes" "None" <-- added this
EndSection

Section "Module" <-- and this entire section
Load "vnc"
EndSection
=====

on the server side i then restarted X (init 3; init 5) and, from the
client side:

$ vncviewer 192.168.1.4:0

and, lo, i get a VNC window, but it looks like crap -- jagged
graphics, underneath which you can vaguely see that, yes, it is trying
to represent the remote desktop, and the remote control does work but,
clearly, i have some work to do here. perhaps messing with the
geometry or something. but, basically, the vnc.so functionality seems
good -- i just need to diagnose why the display looks like crap.

i'm open to suggestions.

rday
--


========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA

Home page: http://crashcourse.ca
Fedora Cookbook: http://crashcourse.ca/wiki/index.php/Fedora_Cookbook
========================================================================

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