12.17.4. PS/2 Mice
Most of the mice used in laptops are PS/2 mice (actually I don't know one with another mouse protocol). You may communicate with the PS/2 mouse through /dev/psaux or /dev/psmouse . If you use X Windows this device and the protocol has to be set in /etc/X11/XF86Config . In earlier releases, sometimes the GPM mouse manager and X Windows had trouble sharing a mouse when enabled at the same time. But as far as I know this is no problem anymore for the latest versions.
Speaking of Emulate3Buttons, 100ms is usually better than the 50ms allowed in most default setups of /etc/X11/XF86Config for XFree86 3.x:
Section "Pointer"
...
Emulate3Buttons
Emulate3Timeout 100
...
EndSection
Or in /etc/X11/XF86Config-4 for XFree86 4.x:
Section "InputDevice"
...
Option "Emulate3Timeout" "100"
Option "Emulate3Buttons" "true"
...
EndSection
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