[AG-TECH] VNC stability problems?

Michael Grobe grobe at raven.cc.ku.edu
Fri Mar 15 16:51:54 CST 2002

> from the site:
> "The Windows version of the VNC server does not appear to allow multiple
> clients, so this approach cannot be used to display PowerPoint slides or
> other Windows applications running on the Podium laptop."
> This is odd, we are able to connect multiple
> sites to a pc server here and are not experiencing the
> crashing either.

at the time we wrote this sentence it was true....in that it so "appeared"
to us    :=)   

and perhaps it WAS true under some setting configurations, but i'm not sure.

however, i learned a couple of months ago that the Windows version of 
VNC can, connect to multiple clients, but had not yet fixed the doc.

i have now changed a version of the doc at


to correct this problem, and have submitted a request to change the
document at:


sorry for the inconvenience.

:michael grobe

> _______________________________________________
> At 07:50 AM 3/15/2002 -0600, Robert Olson wrote:
>    >We've found in the past that the Windows VNC server is not nearly as
> stable 
>    >as the Unix server..
>    >
>    >The Kansas folks have put together a note about using a Unix VNC as a
> relay 
>    >for the Windows one:
>    >
>    >http://www.ku.edu/acs/docs/access-grid-node/vnc/
>    >
>    >--bob
>    >
>    >At 08:35 AM 3/15/2002 -0500, bernholdtde at ornl.gov wrote:
>    >>Trying to use VNC during an AG session yesterday, I experienced rather
>    >>severe stability problems.  When I first connected (as a client), it
>    >>stayed up for probably 10-15 min.  Then is died without any warning or
>    >>messages, and from that point, I wasn't able to get it to stay up for
>    >>more than about 30 seconds, trying perhaps half a dozen times over the
>    >>subsequent three hours. I think ANL might have experienced similar
>    >>problems, but no one else on the session was running VNC.
>    >>
>    >>The servers was on a Windows laptop at NCAR, and it didn't seem to
>    >>have a problem -- the user saw no evidence of any thing, and I was
>    >>able to connect at any time I tried.
>    >>
>    >>We used the VNC client last week for another session, and it was fine
>    >>for at least an hour.  The server was a unix box at LBL.
>    >>
>    >>Has anyone experienced this?  Its a little hard to debug when there is
>    >>no indication of any kind what happened.
>    >>
>    >>Thanks
>    >>--
>    >>David E. Bernholdt                   |   Email: bernholdtde at ornl.gov
>    >>Oak Ridge National Laboratory        |   Phone: +1 (865) 574 3147
>    >>http://www.csm.ornl.gov/~bernhold/   |   Fax:   +1 (865) 574 0680
>    >
>    >
> ___________________________________________________________
> Tom Coffin .......................... tcoffin at ncsa.uiuc.edu

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