Mouse event merging for several mice, how does it work?

[Martin Cracauer]

Can somebody explain to me how this works, which software layer does
it?

- when you have a notebook with a touchpad
- and a USB mouse
- then X11 will use both
- you don't have to have a xorg.conf that mentions both, it's
automatic, and you can plug the USB mouse in and out all you want.

This was a fairly recent feature of XFree, I remember that around 2002
I had to use a ServerConfig with primary and second pointer to get
this going at the time. I remember Linux and FreeBSD got the
"merging" around the same time.

I never understood which software layer did this merging, I don't
think it's the X server. I have to fix it in RELENG_6, apparently,
see appended message.

Martin
--
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Martin Cracauer <crac...@cons.org> http://www.cons.org/cracauer/
FreeBSD - where you want to go, today. http://www.freebsd.org/

[zhang]

There are two video cards in my computer. One is ATI Radeon 9250, the
other is Inter 845. I have disabled the second in BIOS.

Before Xorg 7.3, there is no any problem with the default setting.

For Xorg 7.3, after I installed the drivers for my both cards, the
FreeBSD 6.3-Stable will hang when I run :

Xorg -configure
X -config /roog/xorg.conf.new

I solved my problem through modifying xorg.conf.new like this:

--- xorg.conf.new 2008-01-26 15:11:33.000000000 +0800
+++ xorg.conf.new 2008-01-26 15:14:17.000000000 +0800
@@ -1,7 +1,7 @@
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
- Screen 1 "Screen1" RightOf "Screen0"
+# Screen 1 "Screen1" RightOf "Screen0"
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Of course, there is also no problem, if I just install the driver for
ATI.

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