Looks like a pretty basic, unpowered KVM, that's a good thing, no drivers to worry about and as far as windows is concerned it shouldn't even know the "mouse" is a KVM
Which port is the Dell plugged into? have you tried the Compaq's in that port using the same cable?

Thanks for your response!

It does have a port for separate power. Have tried it both unpowered and powered. Same deal. I have tried all the different ports, and even other cable sets.
Tried a couple of P2 era PC´s they work as expected. So this seem to be only a problem with the prolineas for some really odd reason?
Windows does "detect" an error with the mouse once its plugged in to the KVM. But it is still just the standard mouse driver.

Yeh I didn't think I would be much help but was worth a try!

Ok found a manual, you can try entering "command mode" and disabling the "mouse clicking option" maybe this is causing a conflict of some type.

Also just found out some Proliana's had a "quick lock" function that disable keyboard and mouse if Ctrl, Alt, L are pressed. Maybe that's conflicting with the KVM's own hotkeys somehow?
Seems you need a diagnosis disk or software to disable?
http://www.minuszerodegrees.net/manuals ... FEB95).pdf

Alternately you could try disabling the other hot key's on the KVM, this would explain why its just the compaq's that don't work

Hello!
Thats pretty interesting! The quick lock is disabled though, so i think thats not the problem.

However, the Prolineas may be doing something strange with the hotkeys at bootup as you say.
But for some strange reason i cannot get in to the "Control Mode" by just pressing the Num Lock twice. Not sure what is going on there. It does respond to other hotkeys as scroll lock or Right shift and so on.

My last idea is if you enable quick lock and try locking/unlocking after the PC boots? my thinking is maybe the kvm is sending the lock command during post so the mouse actually works its just disabled.
It's a verrryyy big long shot though and i give it a 0.1% chance of working but maybe just maybe?

In the end I can see you needing a mouse connected direct unless swapping KVM's 🙁 at least a mouse doesn't take up much space I guess

chinny22,

Thank you very much for your help and input. However, i seem to have hit a dead end with this.
I think i will have to do with three mice for now. Its not to bad. However the KVM switch is great, and works with all other computers.

One of these days, it would be interesting to hook up either the scope or a logic analyzer to the PS/2 ports and compare them, just to see what they are doing!