Re: Whats causing this???

Peter F wrote:
Hi All,

I wonder if anyone could help....

We have had a call regarding some problems with KVM switches:

This is a synopsis of the problems encountered so far with the new Avocent Cybex SwitchView SC140's.

Initially we hooked up the KVM in two separate areas consisting of:

1 x machine (XP Pro)
1 x Machine (Windows NT4)

Cables:
1 x 26 pin to VGA/PS2
1 x 26 pin to VGA/USB
1 x VGA to VGA

Adapter:
1 x VGA to DVI

Peripherals:
1 x USB Keyboard
1 x USB Mouse

After installing the equipment in the correct manner (power to the KVM supplied by the two base units) we found that the Keyboard (KB) and Mouse worked fine on XP but on NT4 only the KB worked correctly with no clicking actions available on the mouse (we could still move the cursor around the screen). These symptoms were present on the second installation as well.

Next we tried the configuration with the KVM powered by its own power adaptor but with the same results.

The next step we took was to take out the USB KB and mice and replace
them with PS2 KB's and Mice but with the same fault.

After reporting the fault the Technicians/Engineers were present to fault find, signed on as the local administrator the engineers attempted to alter the configuration but with no joy.

Our next step was to install the KVM onto a stand alone laptop with Windows NT4, similar symptoms were present for this setup. The KB worked, at first, in this setup with the Mouse producing the same error, after re-booting the laptop the KB and Mouse attached to the KVM controller did not work at all. At this point we stopped the trial. Tests were made with the KVM powered by its own power source and off of the laptop.

If you can help in any way that would be great.



WinNT does not, and cannot be made, to support USB.

--

Bruce Chambers

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