Commit 3d6afca9 authored by Peter Hutterer's avatar Peter Hutterer

Only init abs axes if we don't have acceleration

A lot of devices (mainly MS input devices) have abs axes on top of the
relative axes. Those axes are usually mute but with the current code we set up
absolute axes for those devices. Relative events are then scaled by the server
which makes the device appear slow.

As an immediate fix always prefer relative axes and only set up absolute axes
if the device has a calibration matrix but no pointer acceleration.
This may mess up other devices where the relative axes are dead, we'll deal
with this when it comes. Peter Hutterer's avatarPeter Hutterer <>
Reviewed-by: default avatarHans de Goede <>
parent 158e3264
......@@ -85,6 +85,8 @@ struct xf86libinput {
double y_remainder;
} scale;
BOOL has_abs;
ValuatorMask *valuators;
struct options {
......@@ -526,6 +528,8 @@ xf86libinput_init_pointer_absolute(InputInfoPtr pInfo)
SetScrollValuator(dev, 2, SCROLL_TYPE_HORIZONTAL, driver_data->scroll.hdist, 0);
SetScrollValuator(dev, 3, SCROLL_TYPE_VERTICAL, driver_data->scroll.vdist, 0);
driver_data->has_abs = TRUE;
return Success;
static void
......@@ -636,7 +640,8 @@ xf86libinput_init(DeviceIntPtr dev)
if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_KEYBOARD))
if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_POINTER)) {
if (libinput_device_config_calibration_has_matrix(device))
if (libinput_device_config_calibration_has_matrix(device) &&
......@@ -709,6 +714,13 @@ xf86libinput_handle_absmotion(InputInfoPtr pInfo, struct libinput_event_pointer
ValuatorMask *mask = driver_data->valuators;
double x, y;
if (!driver_data->has_abs) {
xf86IDrvMsg(pInfo, X_ERROR,
"Discarding absolute event from relative device. "
"Please file a bug\n");
x = libinput_event_pointer_get_absolute_x_transformed(event, TOUCH_AXIS_MAX);
y = libinput_event_pointer_get_absolute_y_transformed(event, TOUCH_AXIS_MAX);
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