Attach Touchscreen to X Screen
zboszor at pr.hu
Wed Mar 15 18:10:13 UTC 2017
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.
MatchProduct "EETI eGalaxTouch Serial TouchScreen"
Option "TransformationMatrix" "0.5 0 0 0 1 0 0 0 1"
# Explicitly match only the Product name
# Neither MatchIsTouchscreen, MatchIsTouchpad or MatchIsTablet matches this device
MatchProduct "Elo TouchSystems, Inc. Elo TouchSystems 2700 IntelliTouch(r) USB"
Option "TransformationMatrix" "0.5 0 0.5 0 1 0 0 0 1"
2017-03-15 15:50 keltezéssel, Mike Werner írta:
> 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
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