[Wayland-bugs] [Bug 103619] libinput has delayed mouse pointer movement on Lenovo X1v5

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103619

            Bug ID: 103619
           Summary: libinput has delayed mouse pointer movement on Lenovo
                    X1v5
           Product: Wayland
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libinput
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: pkern at debian.org

Created attachment 135301
  --> https://bugs.freedesktop.org/attachment.cgi?id=135301&action=edit
up/down scrolling lag

On a Lenovo X1v5 (and to some degree also on X1v4, but that'd be a separate
bug) initial touchpad movement is delayed by a few ms. You move the finger and
the mouse cursor lags behind. It feels like the cursor is sticky. Two dumps
attached for up/down and left/right movements.

I also have a problem with overshoot, i.e. it feels very hard to precisely hit
the target and I always need to correct down. Unfortunately after a while the
brain adjusts. The dump tries to show how in the last few ms the pointer goes a
bit further and then I need to adjust for that.

P: /devices/platform/i8042/serio1/input/input5/event5
N: input/event5
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=53
E: ID_INPUT_TOUCHPAD=1
E: ID_INPUT_TOUCHPAD_INTEGRATION=internal
E: ID_INPUT_WIDTH_MM=98
E: LIBINPUT_DEVICE_GROUP=11/2/7/1b1:isa0060/serio1
E: LIBINPUT_MODEL_SYNAPTICS_SERIAL_TOUCHPAD=1
E: MAJOR=13
E: MINOR=69
E: SUBSYSTEM=input
E: USEC_INITIALIZED=40887057

Model: Lenovo N1MET37W / X1 Carbon v5

dmi:bvnLENOVO:bvrN1MET37W(1.22):bd07/04/2017:svnLENOVO:pn20HQS0EG1J:pvrThinkPadX1Carbon5th:rvnLENOVO:rn20HQS0EG1J:rvrNotDefined:cvnLENOVO:ct10:cvrNone:

Physical dimensions: 56mm(height)x100mm(width)

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