Working (but not fully understood (was: Re: Activate the mouse after a reboot which didn't activate the mouse?)

[rhkramer@gmail.com]

Intentionally top posting.

Well, the mouse is working now.  Since the last time I wrote, I did try 
rebooting, and rebooting did not make the mouse work, so I tried varioius 
things, like unplugging the mouse cable from the kvm and plugging in a spare 
mouse (which I'm pretty sure was good, but didn't seem to help).

Finally, I tried plugging only one of the two cables from the KVM for the 
mouse and keyboard into the Jessie computer (one of the cables has a PS/2 plug 
and I had had that plugged into the only PS/2 port on this computer (I thought 
(and still think) it is for the keyboard), and the other has a USB plug.

At this point, both the keyboard and mouse are working via that one USB cable.

What I don't understand is how / why the system booted up properly when I first 
installed the KVM (a few months ago).

But, it is working now, so I'll keep my fingers crossed.

Nothing new below this line:

On Friday, April 24, 2020 02:51:26 PM rhkramer@gmail.com wrote:
> Some followup: on my Wheezy system, I find kpsmoused running, I don't see
> that on either my Jessie or Buster systems.
> 
> I'm guessing that kpmoused might be what helps the mouse run in Wheezy /
> non systemd.  I'm pretty sure that Buster is systemd, and maybe so is
> Jessie.  In any event, I can't find an actual file named kpsmoused on any
> of the systems (which surprises me on Wheezy).
> 
> On Friday, April 24, 2020 02:34:29 PM rhkramer@gmail.com wrote:
> > Today I had to reboot my Jessie system, after Firefox totally hung the
> > system (for over an hour, with 20 tabs open).  After the reboot, it seems
> > that most things are working (well, the things I can test without a
> > mouse), but the mouse is not working.
> > 
> > The Jessie system is connected to a KVM system, and because I had to run
> > some errands, I started the boot process and then left, with the KVM set
> > to the Jessie system.
> > 
> > When I came back and tried it, I found that the mouse is not working. 
> > The mouse still works on the other two systems connected to the KVM
> > switch.
> > 
> > I've tried googling and looking at (and trying some) commands found with
> > apropos mouse or apropos x (a lot), but I haven't found a way to activate
> > the mouse.
> > 
> > (I'm assuming that if I reboot and mouse around early after the reboot,
> > the mouse will be activated, but I'd like to avoid another reboot, and
> > maybe learn something.)
> > 
> > While I was looking for ways to activate the mouse, I did come across a
> > place where I could click (well, via a keyboard shortcut) something that
> > said something like: "activate mouse with KDE" -- maybe at some point in
> > time I fat fingered something that unchecked that?
> > 
> > Anyway, suggestions appreciated.
> > 
> > I have tried to get to the "system settings" ahha, ok, I can type
> > systemsettings at a CLI as user, but (1) I don't know how to navigate
> > within that page to get to the mouse device, (2) but (on another system),
> > although I see things to change about the mouse under Hardware ==> Input
> > Devices ==> Mouse, I don't see anything that appears to activate (or
> > de-activate) the mouse.
> > 
> > Suggestions appreciated.