Table Of Contents
Native support for Multitouch devices on Linux, using libmtdev.¶
The Mtdev project is a part of the Ubuntu Maverick multitouch architecture. You can read more on http://wiki.ubuntu.com/Multitouch
To configure MTDev, it’s preferable to use probesysfs providers.
Check probesysfs for more information.
Otherwise, add this to your configuration:
[input]
# devicename = hidinput,/dev/input/eventXX
acert230h = mtdev,/dev/input/event2
Note
You must have read access to the input event.
You can use a custom range for the X, Y and pressure values. On some drivers, the range reported is invalid. To fix that, you can add these options to the argument line:
invert_x : 1 to invert X axis
invert_y : 1 to invert Y axis
min_position_x : X minimum
max_position_x : X maximum
min_position_y : Y minimum
max_position_y : Y maximum
min_pressure : pressure minimum
max_pressure : pressure maximum
min_touch_major : width shape minimum
max_touch_major : width shape maximum
min_touch_minor : width shape minimum
max_touch_minor : height shape maximum
rotation : 0,90,180 or 270 to rotate
An inverted display configuration will look like this:
[input]
# example for inverting touch events
display = mtdev,/dev/input/event0,invert_x=1,invert_y=1