Ignoring specific devices

If a device has the LIBINPUT_IGNORE_DEVICE udev property set to any value but “0”, that device is not initialized by libinput. For a context created with libinput_udev_create_context(), the device is silently ignored and never shows up. If the device is added with libinput_path_add_device() to a context created with libinput_path_create_context(), adding the device will fail and return NULL (see that function’s documentation for more information).

If the property value is exactly “0”, then the property is considered unset and libinput initializes the device normally.

This property should be used for devices that are correctly detected as input devices (see Device type assignment via udev) but that should not be used by libinput. It is recommended that devices that should not be handled as input devices at all unset the ID_INPUT and related properties instead. The LIBINPUT_IGNORE_DEVICE property signals that only libinput should ignore this property but other parts of the stack (if any) should continue treating this device normally.

Below is an example udev rule to assign LIBINPUT_IGNORE_DEVICE to the device with the vendor/model ID of 012a/034b.

$ cat /etc/udev/rules.d/99-ignore-my-device.rules
ACTION!="remove", KERNEL=="event[0-9]*", \
   ENV{ID_VENDOR_ID}=="012a", \
   ENV{ID_MODEL_ID}=="034b", \

See Static device configuration via udev for more details on libinput’s udev properties.