Linux Wacom Project HOWTO
5.2 - Mouse1 (for all kernel 2.4 systems and some 2.6 systems)
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This section largely deals with interaction problems between the mouse1
device, PS/2 mouse, and USB tablets. Serial users can ignore this part.
Starting from linuxwacom-0.7.1, this is not a problem
for most kernel 2.6 systems. If you use kernel 2.6 and a driver newer than 0.7.1,
you may ignore this page. However, it has been reported that on some vendors 2.6
systems, the information detailed on this page still applies. So, if you tried
all the other steps and the tablet still has issues, you may want to apply this
page to elminate the /dev/input/mice issue.
If you have a USB mouse or PS/2 mouse and are also using a USB tablet,
there are two solutions here for you: you may either change your
mouse1 or PS/2 InputDevice section to something other than /dev/input/mice
or build mousedev.o from this project for your kernel, which will ignore
Wacom tablets as USB mice. The wacom tablet appears as a mouse to the Linux
kernel, and consequently, the "mice" device combines the input from all your
mice, including the tablet. This will not give you the behavior you want.
A better choice is to specify the precise USB device or PS/2 mouse from which
you want to receive mouse events, namely /dev/input/mouse0 or /dev/input/mouse1
or /dev/psaux.
If you do not have a USB mouse, adding the Mouse1 device
is probably not something you want to do.
Despite this, Redhat's Anaconda program will do it for you if
you boot the machine with the tablet plugged in. You'll need to be
careful about this.
When you use the mouse1 input device, the data flows from the USB wacom
kernel driver, through the event subsystem, down into the mousedev driver,
out the /dev/input/mouse0 device, and finally into the XInput mouse driver.
You effectively lose all your absolute positioning information because the
mousedev driver converts it into relative data. Additionally, the XFree86
wacom driver does not get control of the cursor because mouse1 is providing
those events.
Therefore, if you have a Mouse1 section, leave it. Redhat 8.0 at least,
expects it to be there; however, if you do not have a USB mouse and you
are using a USB tablet, you will not be using this section, so make
certain that it is commented out of the ServerLayout section covered next.
There is one exception however. If you have no other mouse
device in your ServerLayout section, do not remove Mouse1. XFree86
will not start without at least one core pointer, and the tablet
does not count unless it is specifically identified as a "CorePointer"
rather than merely "SendCoreEvents."
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