Unreliable tap-to-click on a DELL XPS 9370 - exceeds motion threshold
Submitted by Pierpaolo Valerio
Assigned to Wayland bug list
Created attachment 138836 evemu recording of a missed tap
I have a pretty new DELL XPS13 9370 laptop and using tap-to-click my touchpad is missing clicks every now and then (like, 1 every 5 or 6). It happens a lot more often with 2-finger or 3-finger tapping. I suspect this is due to the touchpad recognizing my finger moving during the tap, but it happens way too often to be normal (it NEVER happens on Windows with the same hardware and I think I use my touchpad in the same way regardless of the operating system). Attached is a evemu recording of a missed tap. Other than this I'm happy to report that the touchpad works pretty well (scrolling, palm rejection, accuracy...).
Other info: libinput version 1.10.4 on Manjaro linux
udev info: P: /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-1/i2c-DELL07E6:00/0018:06CB:76AF.0002/input/input19/event10 N: input/event10 S: input/by-path/pci-0000:00:15.1-platform-i2c_designware.1-event-mouse E: DEVLINKS=/dev/input/by-path/pci-0000:00:15.1-platform-i2c_designware.1-event-mouse E: DEVNAME=/dev/input/event10 E: DEVPATH=/devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-1/i2c-DELL07E6:00/0018:06CB:76AF.0002/input/input19/event10 E: EVDEV_ABS_00=0:1216:12 E: EVDEV_ABS_01=0:680:11 E: EVDEV_ABS_35=0:1216:12 E: EVDEV_ABS_36=0:680:11 E: ID_INPUT=1 E: ID_INPUT_HEIGHT_MM=56 E: ID_INPUT_TOUCHPAD=1 E: ID_INPUT_WIDTH_MM=101 E: ID_PATH=pci-0000:00:15.1-platform-i2c_designware.1 E: ID_PATH_TAG=pci-0000_00_15_1-platform-i2c_designware_1 E: ID_SERIAL=noserial E: LIBINPUT_DEVICE_GROUP=18/6cb/76af:i2c-DELL07E6:00 E: LIBINPUT_MODEL_TOUCHPAD_VISIBLE_MARKER=1 E: MAJOR=13 E: MINOR=74 E: SUBSYSTEM=input E: USEC_INITIALIZED=2620793 modalias: dmi:bvnDellInc.:bvr1.2.0:bd01/25/2018:svnDellInc.:pnXPS139370:pvr:rvnDellInc.:rn0F6P3V:rvrA00:cvnDellInc.:ct9:cvr: touchpad-edge-detector: Touchpad size as listed by the kernel: 101x61mm User-specified touchpad size: 105x60mm Calculated ranges: 1216/680
Attachment 138836, "evemu recording of a missed tap":