[Wayland-bugs] [Bug 103149] Touchpad two finger scroll broken after update to fedora 26

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103149

            Bug ID: 103149
           Summary: Touchpad two finger scroll broken after update to
                    fedora 26
           Product: Wayland
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: andi at michlaustderaffe.de

Created attachment 134751
  --> https://bugs.freedesktop.org/attachment.cgi?id=134751&action=edit
evemu recording of two finger upscroll

I recently updated to Fedora 26 and now the two finger scroll of my touchpad
does not work anymore.

I use a Lenovo Thinkpad T440s

libinput --version :
1.8.2

Output of xinput list-props "SynPS/2 Synaptics TouchPad":
Device 'SynPS/2 Synaptics TouchPad':
        Device Enabled (141):   1
        Coordinate Transformation Matrix (143): 1.000000, 0.000000, 0.000000,
0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
        libinput Tapping Enabled (279): 0
        libinput Tapping Enabled Default (280): 0
        libinput Tapping Drag Enabled (281):    1
        libinput Tapping Drag Enabled Default (282):    1
        libinput Tapping Drag Lock Enabled (283):       0
        libinput Tapping Drag Lock Enabled Default (284):       0
        libinput Tapping Button Mapping Enabled (285):  1, 0
        libinput Tapping Button Mapping Default (286):  1, 0
        libinput Natural Scrolling Enabled (287):       0
        libinput Natural Scrolling Enabled Default (288):       0
        libinput Left Handed Enabled (289):     0
        libinput Left Handed Enabled Default (290):     0
        libinput Accel Speed (291):     0.000000
        libinput Accel Speed Default (292):     0.000000
        libinput Scroll Methods Available (293):        1, 1, 0
        libinput Scroll Method Enabled (294):   1, 0, 0
        libinput Scroll Method Enabled Default (295):   1, 0, 0
        libinput Click Methods Available (296): 1, 1
        libinput Click Method Enabled (297):    1, 0
        libinput Click Method Enabled Default (298):    1, 0
        libinput Middle Emulation Enabled (299):        0
        libinput Middle Emulation Enabled Default (300):        0
        libinput Send Events Modes Available (264):     1, 1
        libinput Send Events Mode Enabled (265):        0, 0
        libinput Send Events Mode Enabled Default (266):        0, 0
        libinput Disable While Typing Enabled (301):    1
        libinput Disable While Typing Enabled Default (302):    1
        Device Node (267):      "/dev/input/event15"
        Device Product ID (268):        2, 7
        libinput Drag Lock Buttons (303):       <no items>
        libinput Horizontal Scroll Enabled (304):       1

Output of udevadm info:
P: /devices/platform/i8042/serio1/input/input9/event15
N: input/event15
E: DEVNAME=/dev/input/event15
E: DEVPATH=/devices/platform/i8042/serio1/input/input9/event15
E: EVDEV_ABS_00=::41
E: EVDEV_ABS_01=::37
E: EVDEV_ABS_35=::41
E: EVDEV_ABS_36=::37
E: ID_BUS=i8042
E: ID_INPUT=1
E: ID_INPUT_HEIGHT_MM=66
E: ID_INPUT_TOUCHPAD=1
E: ID_INPUT_TOUCHPAD_INTEGRATION=internal
E: ID_INPUT_WIDTH_MM=97
E: LIBINPUT_DEVICE_GROUP=11/2/7/1b1:isa0060/serio1
E: LIBINPUT_MODEL_SYNAPTICS_SERIAL_TOUCHPAD=1
E: MAJOR=13
E: MINOR=79
E: SUBSYSTEM=input
E: USEC_INITIALIZED=5076372

Content of /sys/class/dmi/id/modalias :
dmi:bvnLENOVO:bvrGJET75WW(2.25):bd03/28/2014:svnLENOVO:pn20ARS1NW00:pvrThinkPadT440s:rvnLENOVO:rn20ARS1NW00:rvrSDK0E50512STD:cvnLENOVO:ct10:cvrNotAvailable:


and attached is a evemu recording of an attempted two finger scroll.
I just put two fingers on the touchpad and move them upwards. On Fedora 25 this
triggered a upscroll.

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