The following message is a courtesy copy of an article that has been posted to comp.os.linux.x as well.
[I have a second mouse that I want to use for xcwcp Morse code practice, instead of hurting my usual mouse. I want to be able to use both at the same time.] Ben> Just have both mice. Set [one] of your mice as Ben> Option "SendCoreEvents" "1" Ben> You can then use both mice (with both hands, fighting for the cursor ;) ). Maybe like Section "InputDevice" Identifier "Configured Mouse" Driver "mouse" Option "SendCoreEvents" "On" Option "Device" "/dev/psaux" Option "Protocol" "PS/2" EndSection Section "InputDevice" Identifier "Generic Mouse" Driver "mouse" Option "CorePointer" Option "Device" "/dev/ttyS1" Option "Protocol" "IntelliMouse" Option "Emulate3Buttons" "true" Option "ZAxisMapping" "4 5" EndSection Well, guess what, the first Section is completely ignored, as seen in /var/log/XFree86.0.log. X just must find its "Generic Mouse", all other Mouses are ignored, at least on Debian. Maybe you know of the secret Identifier for second mouses. I couldn't find it on the XF86Config-4 man page. Yes, I see the promising "This can be used, for example, to allow an additional pointer device to generate core pointer events (like moving the cursor, etc)." But maybe Debian just finds the Identifier it wants and thats the end of it. I don't know. /usr/share/doc/xserver-xfree86/README.mouse.gz has no examples of two mice. The man page says only one CorePointer allowed. I tried Identifier "Morse Mouse" instead of Configured Mouse, no help.