Jittery PS/2 Mouse in 7.0-RELEASE

Ted Mittelstaedt tedm at toybox.placo.com
Fri Mar 21 02:07:40 PDT 2008

I believe if you run the mouse daemon and use /dev/sysmouse
in xorg it will work a lot better.


> -----Original Message-----
> From: owner-freebsd-questions at freebsd.org
> [mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Alexander Dunn
> Sent: Thursday, March 20, 2008 5:12 AM
> To: freebsd-questions at freebsd.org
> Subject: Jittery PS/2 Mouse in 7.0-RELEASE
> I have a PS/2, wired, optical mouse that I have been using flawlessly with
> Windows and several Linux distributions for years now.  I would like to
> switch
> to Free BSD, but the mouse becomes very jittery within FreeBSD.  I have
> tried
> the mouse with both moused and X controlling the mouse, but in both cases
> the
> result is the same. The cursor on the screen tracks properly when
> I move my
> mouse in a wide arc, but when I move the mouse in small increments the
> cursor
> does not follow the mouse at all.  This makes it very difficult
> to click on
> small targets such as an OK button.
> Relevant Information:
> uname -a output:
> FreeBSD kienjakenobi 7.0-RELEASE FreeBSD 7.0-RELEASE #3: Sun Mar
> 16 15:45:08
> 2008     root at kienjakenobi:/usr/obj/usr/src/sys/MYKERNEL  i386
> dmesg mouse output:
> psm0: <PS/2 Mouse> irq 12 on atkbdc0
> psm0: [GIANT-LOCKED]
> psm0: [ITHREAD]
> psm0: model IntelliMouse, device ID 3
> xorg.conf:
> Section "InputDevice"
>     Identifier     "Mouse0"
>     Driver         "mouse"
>     Option         "Protocol" "PS/2"
>     Option         "Device" "/dev/psm0"
>     Option         "Emulate3Buttons" "no"
>     Option         "ZAxisMapping" "4 5"
> EndSection
> This does not seem to be a problem with X for several reasons.
> First, I use
> this version of X.org with Linux with the same config that is shown above
> without this problem.
> Second, when I give control of the mouse over to moused, the problem does
> not
> change.  It is visible even in the console when using moused.
> I am using a custom kernel, but this problem does not change even
> when I am
> using the GENERIC kernel.
> Based on this information I think I have crossed out most potentional
> porblem locations,
> but I hope I missed something.
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