Kernel: jumping cursor bug on Thinkpad T480 touchpad
Hello, with 4 fingers swipe activated I have constant errors craching libinput. It seems to happen after a 4 fingers horizontal swipe, but not each time, for some reasons I don't get. After that I lose multi-fingers swipe ability and the cursor is moving a bit differently, until i reboot my computer (restart libinput-gestures doesn't work).
If i restrain libinput-gestures configuration to 3 fingers swipe only, it works flawlessly and without any trouble in all directions available.
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OS: Xubuntu 18.04 (XFCE) Kernel 4.15.0-23-generic
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libinput-list-devices --version : 1.10.4
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synclient -V: 1.9.0
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udevadm info /sys/class/input/event5
P: /devices/platform/i8042/serio1/input/input5/event5
N: input/event5
S: input/by-path/platform-i8042-serio-1-event-mouse
E: DEVLINKS=/dev/input/by-path/platform-i8042-serio-1-event-mouse
E: DEVNAME=/dev/input/event5
E: DEVPATH=/devices/platform/i8042/serio1/input/input5/event5
E: ID_BUS=i8042
E: ID_INPUT=1
E: ID_INPUT_HEIGHT_MM=65
E: ID_INPUT_TOUCHPAD=1
E: ID_INPUT_TOUCHPAD_INTEGRATION=internal
E: ID_INPUT_WIDTH_MM=98
E: ID_PATH=platform-i8042-serio-1
E: ID_PATH_TAG=platform-i8042-serio-1
E: ID_SERIAL=noserial
E: LIBINPUT_DEVICE_GROUP=11/2/7:isa0060/serio1
E: LIBINPUT_MODEL_SYNAPTICS_SERIAL_TOUCHPAD=1
E: MAJOR=13
E: MINOR=69
E: SUBSYSTEM=input
E: USEC_INITIALIZED=3412260
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Vendor model number of my laptop: Lenovo Thinkpad T480
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Physical dimensions of my touchpad in mm: Length: 115mm Height: 68mm
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modalias file content: dmi:bvnLENOVO:bvrN24ET37W(1.12):bd03/14/2018:svnLENOVO:pn20L5CTO1WW:pvrThinkPadT480:rvnLENOVO:rn20L5CTO1WW:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrNone:
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Original bug report: https://bugs.freedesktop.org/show_bug.cgi?id=107247