[AG-TECH] display manager not receiving correct display

George.C.Jackson at erdc.usace.army.mil George.C.Jackson at erdc.usace.army.mil
Fri Nov 7 09:41:22 CST 2003


Thanks, you were right on the money. I had created an account on the linux
boxes for myself as the new AG operator but forgot to give permissions to
both the audio and video devices.

Thanks again!

-----Original Message-----
From: Thomas D. Uram [mailto:turam at mcs.anl.gov]
Sent: Thursday, November 06, 2003 5:43 PM
To: Jackson, George C
Cc: ag-tech at mcs.anl.gov
Subject: Re: [AG-TECH] display manager not receiving correct display

The problem is probably that the video devices on your linux box are 
either in use, or you don't have permissions to access them.  If either 
of those is true, vic will default to transmitting X11 screen captures.

This is a common problem when one person logs in to the console, and 
another person tries to run the AG software, because the devices will be 
owned by the first person and closed to everyone else.


George.C.Jackson at erdc.usace.army.mil wrote:

> Hi all,
> I was recently put in charge of an access grid node and am having 
> problems seeing the camera views on the display manager.
> Our setup is much like the one in the 'Building an Acess Grid Node' 
> document. Went in yesterday and brought everything up. The only 
> problem is that instead of seeing what the camera is seeing, the video 
> server (agvideo) seems to be transmitting its own screen, showing the 
> Video Resource Manager on the linux desktop in the thumbnail windows 
> on the Win2K display PC.
> I've double-checked cable connections and settings and everything 
> appears to be in place. Also, no network problems have been 
> discovered. I know the cameras are on and broadcasting because they 
> are also hooked to a small monitor and show the correct conference 
> room views. Anyone have an idea why I'm getting my video server screen 
> instead of a camera view in my venues display? All other nodes from 
> other sites come in fine.
> My venues.accessgrid.org location info is Institution Lobby --> U.S. 
> Army Corps of Engineers and is running now.
> Thanks!
> George Jackson
> Linux Systems Administrator
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