Mark Fletcher on 15/04/06 05:46, wrote:
Under sarge I'm running KDE. While using KDE I occasionally notice
the mouse pointer suddenly jumping around the screen in a manner
bearing no relation to the actual movements of the mouse I'm making,
and responding to mouse clicks I didn't make. The mouse is a 3-button
wheel mouse with a PS/2 style connector.
Doing a dmesg, I notice this in the log when it happens:
psmouse.c: Wheel Mouse at isa0060/serio1/input0 lost synchronization,
throwing 3 bytes away.
When it happens, if I take my hand off the mouse and just sit there
for a few seconds, during which time nothing happens on the screen at
all, I can then start using the mouse normally again. For a while
until it happens again.
This happens a couple of times an hour on average I'd say. I am not
noticing any obvious trend like it happening more often the longer
the machine's been up or anything like that.
I don't see behaviour like this under Windows.
That error message quoted above looks like something in the kernel
complaining. I have support for a PS/2 mouse compiled into the kernel.
In the meantime, my X config (XF86Config-4 -- I'm still on XFree86)
relating to mice is as follows:
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "CorePointer"
Option "Protocol" "imPS/2"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "true"
Option "ZAxisMapping" "4 5"
EndSection
That is exactly what I see, but it only happens to me when I swap
screens with my KVM switch.
It sounds like something just doesn't make the grade in terms of
performance. You could try this protocol which I use for a 3 button
wheel mouse:
Option "Protocol" "ExplorerPS/2"
You may need to upgrade hotplug if you are still using it, or udev, or
both. But I had bad experiences upgrading udev just now, so I'd
recommend waiting a couple of months before trying that approach. And
I'm using 2.6.16.3 which is stabler than what you have.
Adam