PSN-L Email List Message

Subject: Re: VNC WinSDR WinQuake
From: Mark Robinson mark.robinson@...............
Date: Fri, 20 Sep 2013 22:29:33 +1200

On 20/09/13 13:42, Thomas Dick wrote:
> On 9/8/2013 3:59 PM, Mark Robinson wrote:
>> On 09/09/13 03:07, Thomas Dick wrote:
>>> Anyone seen this problem; the monitor display on my network computers upstairs
>>> will lock up for minutes or more at a time when viewing the seismic computer
>>> screen data (on the basement computer). The seismic computer seems to do its
>>> job and collects seismic data and displays it OK.  All the data is stored and
>>> retrievable. All other computer monitors display is hesitant. WinSDR Replay and
>>> Winquake manipulations are slow. If the monitor screen is right clicked
>>> (upstairs computers)  it will immediately catch up. I removed all data over two
>>> weeks old from the main drive of the seismic computer, (75 GB hard drive with
>>> 55 GB of free space running XP @ 2.5 GHz with  1.5 GB of ram on board). I run a
>>> small network (all computers running XP are at least as fast as the one
>>> collecting seismic data; one is running Windows 7).  All computers behave the
>>> same way and are connected using cable and VNC. The seismic computer is never
>>> accessed by more than one computer at a time. Screen display is 94 lines and
>>> redraw 40....screen resolution is 1290x1024 at 32 bit color....the monitor on
>>> the basement computer collecting the seismic data seems to have normal/correct
>>> display with no tardiness. VNC was recently updated
>> Hi Thomas,
>> You might have better luck using the client/server modes in WinSDR rather
>> than using VNC.
>> On the seismic computer enable server mode:
>>     Settings -> System -> Server/Client -> Server -> Enable
>> On the other computers run WinSDR and enable Client mode:
>>     Settings -> System -> Server/Client -> Client -> Enable
>> And enter the IP address of the seismic computer.
>> This uses a tiny fraction of the network bandwidth which VNC requires, and
>> places a similar fraction of load on the seismic machine.
>> Mark
>> I appreciated your email. I did what you told me and it worked fine. I had to
>> shut down everything the other night (but the seismic computer). When I
>> restarted the computer, WinSDR client didn't seem to work. I have reinstalled
>> everything at least four times. I can't figure out what I did wrong. I even
>> dug up the original email. Got any suggestions?

Hi Thomas,

What did you do before what didn't happen ?

Were there any error messages ? What did they say ?

You might want to check that the IP addresses haven't changed.

Then you could try pinging the other machine's address from a command prompt.

If the IP addresses are changing on you, you might want to configure the 
machines with static addresses, or give them permanent addresses in the DHCP 
settings in your router.

All the best,


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