Problem with checking battery status
R31 laptops have a problem where anytime ACPI or APM events are polled (e.g. checking battery status), causes the mouse to jerk around the screen clicking on things. Also sometimes repeating keypresses are generated.
- ThinkPad R31
Anomaly in the way the kernel driver handles the i8042 keyboard/mouse controller in the R31.
These messages in dmesg seem to be related:
psmouse.c: TrackPoint at isa0060/serio4/input0 lost synchronization, throwing 2 bytes away. psmouse.c: TrackPoint at isa0060/serio4/input0 lost synchronization, throwing 2 bytes away.
Don't query the battery. Remove any battery applets from your panel.
i8042.nomux=1 kernel parameter at boot. Add it to your appendline in /etc/lilo.conf or append it to the kernel line in the /boot/grub/menu.lst file of your grub installation.
Make sure to use ACPI, as this does not work if you boot with APM.