Attach Touchscreen to X Screen

[Boszormenyi Zoltan]

Hi,

Read man xinput, see option map-to-output.

Then you can query the transformation matrix using xinput and
use the values in an xorg.conf piece, like these below so they are
applied as soon as the X server starts. This example works for
two X displays with identical resolutions side by side.

Section "InputClass"
     Identifier "INTERNAL_TS"
     MatchIsTouchscreen "on"
     MatchProduct "EETI eGalaxTouch Serial TouchScreen"
     Option "TransformationMatrix" "0.5 0 0 0 1 0 0 0 1"
EndSection

# Explicitly match only the Product name
# Neither MatchIsTouchscreen, MatchIsTouchpad or MatchIsTablet matches this device
Section "InputClass"
     Identifier "ELO_TS"
     MatchProduct "Elo TouchSystems, Inc. Elo TouchSystems 2700 IntelliTouch(r) USB"
     Option "TransformationMatrix" "0.5 0 0.5 0 1 0 0 0 1"
EndSection

2017-03-15 15:50 keltezéssel, Mike Werner írta:
> Hi,
>
> I need to run multiple touch screens on an OpenSuSE 13.2 system, as well as on an Ubuntu 
> 16.04. Every thing works „fine“ when the system only has one graphics card (Nvidia) 
> installed. Unfortunately the systems is required to provide two graphics cards. In this 
> case the system has two XScreens and my approach mapping the xinput ID to a display port 
> does not work any longer. It seems that xinput is only able to work properly with one 
> xscreen (i.e. screen 0).
>
> Is there a way to have multiple touch screens connected to multiple graphics cards? How 
> can this be achieved?
>
> *
> Kind regrads
>
> Mike
> *
>
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