Created attachment 133378 [details] events from AlpsPS/2 ALPS DualPoint TouchPad and evemu record. Model: Dell Latitude E5550 Version: libinput 1.6.3 How to reproduce: Pinch with your thumb and three fingertips like if you want to activate Mac's "Launchpad" feature. Device: AlpsPS/2 ALPS DualPoint TouchPad Kernel: /dev/input/event17 Group: 7 Seat: seat0, default Size: 102.38x53.87mm Capabilities: pointer Tap-to-click: disabled Tap-and-drag: enabled Tap drag lock: disabled Left-handed: disabled Nat.scrolling: disabled Middle emulation: enabled Calibration: n/a Scroll methods: *two-finger edge Click methods: none Disable-w-typing: enabled Accel profiles: none Rotation: n/a $ xinput list-props "AlpsPS/2 ALPS DualPoint TouchPad" Device 'AlpsPS/2 ALPS DualPoint TouchPad': Device Enabled (140): 1 Coordinate Transformation Matrix (142): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000 libinput Tapping Enabled (322): 0 libinput Tapping Enabled Default (323): 0 libinput Tapping Drag Enabled (324): 1 libinput Tapping Drag Enabled Default (325): 1 libinput Tapping Drag Lock Enabled (326): 0 libinput Tapping Drag Lock Enabled Default (327): 0 libinput Tapping Button Mapping Enabled (328): 1, 0 libinput Tapping Button Mapping Default (329): 1, 0 libinput Accel Speed (304): 0.000000 libinput Accel Speed Default (305): 0.000000 libinput Natural Scrolling Enabled (309): 0 libinput Natural Scrolling Enabled Default (310): 0 libinput Send Events Modes Available (289): 1, 1 libinput Send Events Mode Enabled (290): 0, 0 libinput Send Events Mode Enabled Default (291): 0, 0 libinput Left Handed Enabled (311): 0 libinput Left Handed Enabled Default (312): 0 libinput Scroll Methods Available (313): 1, 1, 0 libinput Scroll Method Enabled (314): 1, 0, 0 libinput Scroll Method Enabled Default (315): 1, 0, 0 libinput Middle Emulation Enabled (318): 1 libinput Middle Emulation Enabled Default (319): 1 libinput Disable While Typing Enabled (330): 1 libinput Disable While Typing Enabled Default (331): 1 Device Node (292): "/dev/input/event17" Device Product ID (293): 2, 8 libinput Drag Lock Buttons (320): <no items> libinput Horizontal Scroll Enabled (321): 1 $ udevadm info /sys/class/input/event17 P: /devices/platform/i8042/serio1/input/input8/event17 N: input/event17 E: DEVNAME=/dev/input/event17 E: DEVPATH=/devices/platform/i8042/serio1/input/input8/event17 E: ID_BUS=i8042 E: ID_INPUT=1 E: ID_INPUT_HEIGHT_MM=53 E: ID_INPUT_TOUCHPAD=1 E: ID_INPUT_TOUCHPAD_INTEGRATION=internal E: ID_INPUT_WIDTH_MM=102 E: LIBINPUT_DEVICE_GROUP=11/2/8/700:isa0060/serio1 E: LIBINPUT_MODEL_ALPS_TOUCHPAD=1 E: LIBINPUT_MODEL_FIRMWARE_VERSION=700 E: MAJOR=13 E: MINOR=81 E: SUBSYSTEM=input E: USEC_INITIALIZED=29108658 $ cat /sys/class/dmi/id/modalias dmi:bvnDellInc.:bvrA15:bd05/09/2017:svnDellInc.:pnLatitudeE5550:pvr:rvnDellInc.:rn0JPRM5:rvrA00:cvnDellInc.:ct9:cvr:
attach your dmesg as well please, thanks.
Created attachment 133863 [details] dmesg
Created attachment 133864 [details] Xorg
Seems to be a driver issue. (Fixed in 4.9.46). Masaki Ota (1): Input: ALPS - fix two-finger scroll breakage in right side on ALPS touchpad.
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