diff options
| author | Peter Hutterer <peter.hutterer@who-t.net> | 2016-03-07 16:05:25 +1000 |
|---|---|---|
| committer | Peter Hutterer <peter.hutterer@who-t.net> | 2016-03-11 10:02:26 +1000 |
| commit | a608d9dc2c70c7915fc94466ed27c1684f65409e (patch) | |
| tree | 72330e679e6f893e402523ebd158a40c9abd52f5 /udev | |
| parent | 5d904b63191538b46d7fe8443990b55c42de0205 (diff) | |
touchpad: add quirk for the T450 and T460 generation hardware
The touchpad's sensors are too far apart (or the firmware interferes), causing
in a jerky movement visible especially on slow motion. We get a bunch of
normal motion events, then only ABS_MT_PRESSURE updates without x/y updates.
After about one mm of movement x/y updates resume, with the first event
covering the distance between the last motion event. That event is usually
accelerated and thus causes a large jump. Subsequent events are sufficiently
fine-grained again.
This patch counts the number of non-motion events. Once we hit 10 in a row, we
mark the first motion update as non-dirty, effectively discarding the motion
and thus stopping the pointer jumps.
https://bugs.freedesktop.org/show_bug.cgi?id=94379
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Tested-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Diffstat (limited to 'udev')
| -rw-r--r-- | udev/90-libinput-model-quirks.hwdb | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/udev/90-libinput-model-quirks.hwdb b/udev/90-libinput-model-quirks.hwdb index eb2859e..d5978f7 100644 --- a/udev/90-libinput-model-quirks.hwdb +++ b/udev/90-libinput-model-quirks.hwdb @@ -100,6 +100,13 @@ libinput:name:Cypress APA Trackpad (cyapa):dmi:* libinput:name:SynPS/2 Synaptics TouchPad:dmi:*svnLENOVO:*:pvrThinkPadX230* LIBINPUT_MODEL_LENOVO_X230=1 +# Lenovo T450/T460 and all other Lenovos of the *50 and *60 generation, +# including the X1 Carbon 3rd gen +libinput:name:SynPS/2 Synaptics TouchPad:dmi:*svnLENOVO:*:pvrThinkPad??50*: +libinput:name:SynPS/2 Synaptics TouchPad:dmi:*svnLENOVO:*:pvrThinkPad??60*: +libinput:name:SynPS/2 Synaptics TouchPad:dmi:*svnLENOVO:*:pvrThinkPadX1Carbon3rd:* + LIBINPUT_MODEL_LENOVO_T450_TOUCHPAD=1 + ########################################## # Synaptics ########################################## |