Mouse + KVM Issues [with fix]

[Jordan Sissel]

On 3/5/07, Rick Olson <rick at napalmriot.com> wrote:
> I'm really not sure which list to post this to, and this is my first
> post on any of the official FreeBSD mailing lists, so pardon my
> ignorance.  This was a tossup between arch & hackers.
>
> A long time ago, way back in May of 2005, there was a bug/change-request
> posted by a Tim H. regarding increasing compatibility of the psm driver
> with KVM switches.  That post is located at:
> http://lists.freebsd.org/pipermail/freebsd-bugs/2005-May/012848.html
>
<snip>
>
> Is there any way that simple change could be implemented into the base,
> or are there other issues that would arise by implementing that fix?  I
> can verify that it works, and I've noticed there are quite a few people
> that experienced the same issue.

kern/80844 changes probe order. However, probe order is important, and
this will break people who have mouseman ps/2 mice and want to use
horizontal scrolling.

Mouseman protocol supports horizontal scrolling. Intellimouse does
not. Maybe a sysctl knob to say "I'm behind a kvm" that always makes
it use either generic ps/2 or intellimouse? Most mice support one or
both, it seems, along with whatever other proprietary protocol they
use.

-Jordan