libinput  0.8.0
A wrapper library for input devices
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Modules Pages
Static device configuration via udev

libinput supports some static configuration through udev properties.

These propertiesare read when the device is initially added to libinput's device list, i.e. before the LIBINPUT_EVENT_DEVICE_ADDED event is generated.

The following udev properties are supported:

LIBINPUT_CALIBRATION_MATRIX
Sets the calibration matrix, see libinput_device_config_calibration_get_default_matrix(). If unset, defaults to the identity matrix.
ID_SEAT
Assigns the physical seat for this device. See libinput_seat_get_physical_name(). Defaults to "seat0".
WL_SEAT
Assigns the logical seat for this device. See libinput_seat_get_logical_name() context. Defaults to "default".
MOUSE_DPI
HW resolution and sampling frequency of a relative pointer device. See Normalization of relative motion for details.
MOUSE_WHEEL_CLICK_ANGLE
The angle in degrees for each click on a mouse wheel. See libinput_pointer_get_axis_source() for details.

Below is an example udev rule to assign "seat1" to a device from vendor 0x012a with the model ID of 0x034b.

ACTION=="add|change", KERNEL=="event[0-9]*", ENV{ID_VENDOR_ID}=="012a", \
ENV{ID_MODEL_ID}=="034b", ENV{ID_SEAT}="seat1"