Fwd: Re: [Gate-users] Remote Visualization Problem

[xiaohan at uchicago.edu]

Hi Christian,

Thank you so much for your reply. Unfortunately it still
doesn't work here at all. I have local and remote machines
installed with Fedora Core 4. vncserver+vncviewer is used.
None of the three methods, local <-SSH->remote,
local<-VNC->remote and local<-VNC->local, can start the
visualization window. I always got the following response:

PreInit> vis/open OGLSX
/vis/open OGLSX
1 OpenGLStoredX scene handlers extanct.
G4OpenGLViewer::G4OpenGLViewer couldn't open display.
G4OpenGLStoredX::CreateViewer: error flagged by negative view
id in G4OpenGLStoredXViewer creation.
 Destroying view and returning null pointer.
ERROR in G4VisManager::CreateViewer during OpenGLStoredX
viewer creation.
  No action taken.

 *** Break *** segmentation violation
 Generating stack trace...
Abort (core dumped)

I am not sure why this is so. Especially when I ran VNC on the
remote machine itself. (BTW, the VNC-ed window is never the
same as the actual screen that is monitored, but just a plain
greyish window).

Xiao



---- Original message ----
>Date: Wed, 15 Nov 2006 08:21:03 +0800
>From: Christian Wietholt <cwietholt at nhri.org.tw>  
>Subject: Fwd: Re: [Gate-users] Remote Visualization Problem  
>To: xiaohan at uchicago.edu
>Cc: gate-users at lists.healthgrid.org
>
>
>Hello Xiao, 
>
>I just tried out the visualization via VNC over the network.
I have on both 
>machines Debian Unstable installed. Both use XOrg 7.1. The
remote machine has 
>the ATI OpenGL drivers installed, the local machine has the
XOrg Radeon 
>drivers installed. 
>
>As a VNC server I start x11vnc v.0.8.2 on the remote machine
using the 
>following command from the local machine: 
>
>ssh -L 5901:127.0.0.1:5901 10.71.10.1 'x11vnc -localhost
-display :0'
>
>As a VNC client I start TightVNC viewer v.1.2.9 on the local
machine using the 
>following command: 
>
>vncviewer -encodings "copyrect tight zrle hextile"
127.0.0.1::5901
>
>Remote controlling my GATE simulation machine this way, I can
get the OpenGL 
>visualization to work just fine. It might be a bit sluggish
though. 
>
>I just tried exporting the visualization window onto the
local desktop with 
>only little success. It managed to completely freeze my Desktop. 
>
>I hope this will help you to get things to work. 
>
>Christian
>----------  Forwarded Message  ----------
>
>Subject: Re: [Gate-users] Remote Visualization Problem
>Date: Wednesday 15 November 2006 00:08
>From: xiaohan at uchicago.edu
>To: Christian Wietholt <cwietholt at nhri.org.tw>
>
>Hi Christian,
>
>That's a good idea! I'm gonna have a try. Please keep me
>posted about your result, too.
>
>Thanks,
>
>Xiao
>
>---- Original message ----
>
>>Date: Tue, 14 Nov 2006 01:53:57 +0100
>>From: Christian Wietholt <cwietholt at nhri.org.tw>
>>Subject: Re: [Gate-users] Remote Visualization Problem
>>To: xiaohan at uchicago.edu
>>
>>I would guess it is a problem with your OpenGL setup. Although,
>>if you do VNC remote control, images of the remote desktop
>
>are just
>
>>transfered in jpg. One way to find out is to compare the VNC
>
>output
>
>>on the remote machine with the VNC output on the local
>
>computer. I
>
>>believe the output over VNC works for me, but I will have a
>
>look as
>
>>soon as I get a chance to.
>>
>>Christian
>>
>>> -----Ursprüngliche Nachricht-----
>>> Von: xiaohan at uchicago.edu
>>> Gesendet: 14.11.06 00:54:01
>>> An: gate-users at lists.healthgrid.org
>>> Betreff: [Gate-users] Remote Visualization Problem
>>>
>>>
>>>
>>> Hi Gaters,
>>>
>>> I can SSH to log on to, or use VNC to remotely control a PC
>>> with GATE2.0 and run macro files in GATE to acquire data.
>>> However, I could never visualize the constructed system from
>>> an another computer. Is this a problem of GATE or OpenGL? Does
>>> any one know how to enable visualization remotely?
>>>
>>> Thank you,
>>> Xiao
>>> _______________________________________________
>>> Gate-users mailing list
>>> Gate-users at lists.healthgrid.org
>>> http://lists.healthgrid.org/mailman/listinfo/gate-users
>
>-------------------------------------------------------