Why does VNC server on unix just die?

Joe Henley joehenley "at" kc.rr.com
Thu Apr 22 17:06:02 2004


Do you how to make it fail quickly?  (Please see **** below.)  I'm 
trying to find a way to get the viewer to fail quickly when the server 
goes down.


Joe Henley

Corni Beerse wrote:
> Kelly F. Hickel wrote:
>> I've been seeing the following behavior for quite awhile, and I'm
>> getting tired of it, so I thought I'd ask....
>>> From time to time, I'll go to connect to a VNC server session and it
>> will have exited.  There's nothing in the VNC or machine logs, the X
>> lock files in /tmp have been orphaned, and the VNC/X process is gone.
>> I've seen this with RealVNC servers ranging from v3.3 through v4b4, and
>> I've seen it on solaris, RH 7.2, RH 8, RH 9, and Fedora.  I've seen it
>> on my office lan, and on my home lan..  Sometimes it seems to happen
>> while a client is connected, but it also happens when no client is
>> connected.  Usually it seems to happen "off hours", although I've seen
>> it happen during the day.  Sometimes it's over the weekend, other times
>> just overnight.  I haven't been able to find any pattern, nor any clue
>> to what's happening.  Other users at my company (using different servers
>> and clients) have also seen this.
>> Anybody else seen it?  Any clues?
> Investigatons include settings of used stuff that can make this happen:
> - autologout from the window manager or display manager (gnome, kde, cde 
> etc)
> - bad connections: If a vnc-session detects a missing connection, the 
> viewer fails. 

If it does not detect a missing connection (there is no
> keyboard or mouse action) then the network can be disconnected an 
> connected after which the session continues...
> - automatic clearing of X11 sockets (I've seen this on Solaris)
> Since you use many versions of Xvnc (and vncviewer) I dont expect them 
> to be problematic.
> CBee
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