On 15 Jun 2005 02:30:45 -0700, "jameshanley39 (AT) yahoo (DOT) co.uk"
<jameshanley39 (AT) yahoo (DOT) co.uk> wrote:

It won't help. Put the money into a decent kvm, that's where your
problem is.

If I leave the switch on all the time, the 2 [PSUs] ARE NOT identical.
If that was the case then I wouldn't have a problem.

The problem was that when I turn the computer off, the KVM does not
detect it unless the PSU is switched off too.

I know that an ATX PSU without a switch works, I obviously tested one.
that is why I have said that the problem was the fact that the PSU has
a switch at the back. My description of the problem was not a
description of how I diagnosed it. You assumed that I didn't diagnose
it at all, and didn't even try a 'regular' ATX PSU. Why else do you
keep telling me that a 'regular' ATX PSU would work?!! And somebody
else assumed that I had an AT PSU. I appreciate the responses - even if
they're wrong, because people can be corrected, and the forum also acts
as a knowledge base, and people can be learn, and others with similar
problems can benefit from a cumulative brain, with errors weeded out.


I'm still posting - for the benefit of somebody else with the same
problem. So they don't fall for bad solutions being suggested. It is a
waste of money to buy a new kvm switch to replace the excellent one I
have, whilst being totally ignorant as to whether the new KVM switch
will actually not have the same problem. I can't know before I buy it.

You can have a look at this so-called 'POS KVM' here. It now has 48
glowing reviews. It is a wonderful KVM.
http://www.newegg.com/Product/Produc...82E16817107602

I tried a few KVMs before, and , like many people that reviews that
KVM, I found that this KVM was reliable and worked well.

Unless it's proven to me that another KVM does not have that
malfunction, and it works just as well as the Zonet KVM Switch, then I
don't see any reason for me to go throwing money around with my fingers
crossed.

The cheapest and best solution for anybody with this problem is to
trade in your old PSUs and get new ones. This solution should be
reconsidered if it were proven that another KVM Switch does not have
this problem.
Obviously, I suggest that those with the problem, test with a regular
PSU yourselves. If a regular PSU works, then you have the same problem
I have. and so far, only one guaranteed solution exists. And if you
trade in your old PSUs and get ones without switches, then it really
isn't exactly a 'waste of money'! It's the only guaranteed solution
given thus far, and it costs nothing.

I am posting this so that people do not get fed wrong information. And
so that the bad solutions do get weeded out. I do appreciate all
responses, including ones with logical errors and faulty assumptions.

The point you're missing is that the switch
has nothing to do with this. An ATX supply
is standard, what is much more likely is that
the 5VSB line, which your keyboard is apparently
powered by, in one case can supply more current
than in the other. The only thing the back panel
switch turns off when the machine is powered
down is the standby volts.

<jameshanley39 (AT) yahoo (DOT) co.uk> wrote

so according to you, what should I be changing?

I have shown that the kvm switch is happy with one of my 'switchless'
ATX supplies. So my KVM switch is not at fault.

I tried a few diff comps and swapped PSUs, it seems, as people have
said, it's nothign to do with the PSU. It's an issue between the
motherboard(made by pcchips / pcchipsusa ) and the kvm.

jameshanley39 (AT) yahoo (DOT) co.uk wrote:
I've chatted to some techie electricians. The KVM is fine. It's a
stupid motherboard for pumping electricity down the 2ps2 port when the
computer is off.

Perhaps if there was a KVM switch that doesn't taket power from the ps2
port then i'd be ok. My KVM switch has an AC adaptor , but it's as an
extra source of power. Not an alternative. So it doesn't fix the
problem.

You should check your mobo manual. As I
said before, your mouse/keyboard is taking
power from the standby volts instead of the
regular 5 volt line. There often is a jumper
that can be changed. This would remove the
ability to wake up the computer with the
KB or mouse, but also solve your KVM problem.

<jameshanley39 (AT) yahoo (DOT) co.uk> wrote

Pen wrote:
I checked that. There are no jumpers. I disabled all power management
settings in the BIOS, including wakeup by keyboard.

The keyboard lights always flash whenever they're plugged into the ps2
port.

The electrician said it's a common motherbaord problem. He said it's
because the motherboard puts the num lock on when the computer is off.
I found an option in the BIOS to 'set numlock off at bootup' but still
electricity comes out of that ps2 port - the keyboard lights flash.

I'm going to try to get some results using the USB port instead. (Using
a USB keyboard, and ps2-usb and usb-ps2 adaptors). My KVM is of course
ps2 too. I found that plugging a usb keyb in there was ok (lights
didn't flash).

On 6/15/2005 05:37, jameshanley39 (AT) yahoo (DOT) co.uk wrote:

The best bet is to stick with a quality PSU such as Antec or PC Power and
Cooling. Yes, it will cost more.

~Jason

--

jameshanley39 (AT) yahoo (DOT) co.uk wrote:
i'll just add. besides the fact that it's a stupid motherboard for
letting electricity out the ps2 port, and a quailty motherboard
shouldn't do that. I have beeen told that there are also KVMs that
don't take power from ps2. makes are Cyclades, Raritan, Avocent.
Perhaps those KVMs that take power from ps2 are a bit stupid for doing
so.
So solutions to my KVM n motherboard prob include getting a better
motherboard or a 'better'/different kind of KVM.
i'll add that my stupid motherboard is now inexplicably dead. I shall
get decent Antec / PC Power and Cooling PSUs as suggested. Though this
particular paragraph is unrelated to the KVM prob. I won't be meddling
with the USB-PS2 adaptors now that my stupid mobo is dead. (unless
perhaps, my new mobo is equally stupid).