Solved! (Re: Problem with Multiseat-X on Ubuntu Jaunty / Xorg 1.6 + evdev)

[Peter Hutterer]

On Wed, Jul 29, 2009 at 11:19:37AM +0200, Wolfgang Klein wrote:
> Hello!
> 
> By pure accident I found a solution. Somewhere in a mailing list archive
> I found someone mentioning this option in connection with evdev:
> 
>     Option "GrabDevice" "on"
> 
> So put this option into every input device section like this:
> 
> 
> Section "InputDevice"
>     Identifier  "mouse_2"
>      Driver      "evdev"
>     Option "GrabDevice" "on"
>     Option      "Device" "/dev/input/mouse_2"
>     Option      "ZAxisMapping"      "4 5"
> EndSection
> 
> 
> And now it works! All four input devices are kept apart and none
> influences the wrong xserver.
> 
> Though I am happy everything is working now, I'm still looking forward
> finding an explanation what exactly this option does and why it wasn't
> necessary in Ubuntu Hardy.

Look at the evdev man page.
It's only necessary since 2.1, up to 2.0 evdev grabbed the device
unconditionally.

Cheers,
  Peter