I am looking for help on a problem with display freezes in vncviewer running
on a dual processor computer with Windows XP.
The primary symptom is that vncviewer running on a dual processor client
freezes its video after a few seconds or a few minutes. But, it works fine
when I change boot.ini to run only one processor.
Additional Symptoms:
The vnc link stays active, even though the viewer video is frozen.
The mouse on the client continues to control the cursor on the server,
even though the video on the client is frozen.
High data rate video, such as YouTube video, or rapid scrolling in
Excel, causes the freeze to occur sooner than when the screens are fairly
quiet.
The debug log at level 100 is "effectively identical" for a successful 1
processor session, and for a frozen 2 processor session.
Assigning vncviewer process affinity to a single processor does not fix
the problem.
Assigning all process affinities except vncviewer to one processor, and
assigning vncviewer to the other processor does not fix the problem.
Changing routers does not fix the problem.
Turning off all firewalls and all anti-virus programs does not fix the
problem.
The Java version of vncviewer also exhibits the freeze-up.
Reversing the roles of the client and the server does not freeze up.
Winvnc works fine on the dual processor machine, and vncviewer works on the
other (single processor) machine.
Connecting to the same server from a different client computer that has
a single processor does not freeze up. The problem appears to be localized
to the dual processor machine.
Client Configuration:
vncviewer personal edition P.4.2.3
Windows XP Home with latest updates
Including Windows Patch KB896256 for AMD dual processors
Including AMD dual core processor patch 1.3.2.16
Including AMD dual core optimizer
AMD Athlon 64 X2 Dual Core Processor 4400+
3 Gigabytes of RAM
GeForce 6800 XT video card
1 gigabit port to Linksys router
Server Configuration:
winvnc4 4.1.2.0
Windows XP Home with latest updates
Dell Inspiron 8600 laptop
100 mbps port to the same Linksys router
Network configuration:
This is a local area network connected through a Linksys router.
The 2 computers are in the same room.
I am controlling the server (a laptop) through the screen and keyboard
of the client (a desktop with a large screen and good keyboard.)
The vnc logs report a 20,000 kbps connection
Thanks
--Richard Fox--
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