On 28/08/2020 21:24, Theo wrote:
"Dave Plowman (News)" wrote:
In article ,
Paul wrote:
I interpret your description, as a resolution change. You had
one resolution before sleeping the computer, now it's selected
a different resolution, based on something that happened.

If I look at display settings, there is only a choice of two - both
ancient 4:3 ones, with this condition. And instead of the monitor name,
says KVM.

Your KVM isn't passing through the EDID (DDC) info, so your PC thinks it's
connected to an old VGA monitor. Given that it says 'KVM' it suggests the
PC is successfully talking to the KVM, but the KVM is giving the wrong
answers.

You can get 'EDID emulator' boxes that lie to the PC as to what EDID is
attached, eg:
https://www.ebay.co.uk/itm/Gefen-DVI...e/133363100740
which might avoid that problem - you hook up the monitor to the box and
record the EDID. Then you plug the box into the computer and it thinks that
kind of monitor is always attached, even when the KVM removes it.

It should be something the KVM does itself, though. Perhaps there's a
setting somewhere?

Theo


I use two PCs at the moment with a very basic KVM. (Aten CS22U) One PC
is W10 and the other is XP. It just works, I'm afraid.

I realise that this is no help at all with your issue, but I thought it
might give you hope.