hints on KVM switches w/ X

[Josh Tolbert]

On Mon, Jun 02, 2003 at 12:52:05PM -0400, Tom Convery wrote:
> Gregory Bond wrote:
> >Has anyone got hints on using KVM switches with XFree86?  I'm using a
> > wheel mouse and moused, but something gets out of whack when I
> >switch away then back to X.
> 
> What make/model of KVM and mouse are you using? I've had this happen to
> me when the KVM doesn't _really_ support the mouse I'm using, e.g. using
> an IntelliMouse Explorer with any Belkin KVM I've ever tried.
> 
> >Next time I touch the mouse, all sorts of weird things happen for a 
> >fraction of a second, then the mouse starts working OK.
> 
> This happens when the psm driver gets out of sync with the mouse. The 
> driver realizes this is happening and corrects itself, but not until it 
> gets enough garbage (which makes the mouse cursor bounce and click all 
> over the place) to realize it's out of sync. :-\
> 
> If the earlier-posted hint about disabling psm sync checking (with 
> "flags 0x0100") doesn't help, replacing your KVM may be the answer. :-(
> 
> -tpc

	You can also try "flags 0x200" to correct this problem.
However, one of the side effects of 0x200 is it disables most
"special" functions of the mouse (fourth and fifth buttons, wheels,
etc.) It forces "true PS/2" compatibility mode. I have to use flags
0x200 to make my IOGear MiniView SE four-port KVM switch play nice
with my FreeBSD machines because 0x100 didn't do the job.

Thanks,
Josh