[Wayland-bugs] [Bug 107952] Click and drag on T480s doesn't work

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107952

            Bug ID: 107952
           Summary: Click and drag on T480s doesn't work
           Product: Wayland
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: XWayland
          Assignee: wayland-bugs at lists.freedesktop.org
          Reporter: sjakub at gmail.com
        QA Contact: xorg-team at lists.x.org

Created attachment 141591
  --> https://bugs.freedesktop.org/attachment.cgi?id=141591&action=edit
Recording of the events

Under Windows, as well as on my old laptop, when I click on the touchpad and
keep it "clicked" with one finger, I can then drag the object with my swiping
with my other finger. On T480s it doesn't work. The cursor doesn't move at all,
although I can see it changing shape when the drag happened on the top bar of a
window.

libinput-1.12.0

Device 'Elan Touchpad':
        Device Enabled (174):   1
        Coordinate Transformation Matrix (176): 1.000000, 0.000000, 0.000000,
0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
        libinput Tapping Enabled (328): 1
        libinput Tapping Enabled Default (329): 0
        libinput Tapping Drag Enabled (330):    1
        libinput Tapping Drag Enabled Default (331):    1
        libinput Tapping Drag Lock Enabled (332):       0
        libinput Tapping Drag Lock Enabled Default (333):       0
        libinput Tapping Button Mapping Enabled (334):  1, 0
        libinput Tapping Button Mapping Default (335):  1, 0
        libinput Natural Scrolling Enabled (310):       0
        libinput Natural Scrolling Enabled Default (311):       0
        libinput Disable While Typing Enabled (336):    1
        libinput Disable While Typing Enabled Default (337):    1
        libinput Scroll Methods Available (312):        1, 1, 0
        libinput Scroll Method Enabled (313):   1, 0, 0
        libinput Scroll Method Enabled Default (314):   1, 0, 0
        libinput Accel Speed (319):     0.000000
        libinput Accel Speed Default (320):     0.000000
        libinput Left Handed Enabled (324):     0
        libinput Left Handed Enabled Default (325):     0
        libinput Send Events Modes Available (295):     1, 1
        libinput Send Events Mode Enabled (296):        0, 0
        libinput Send Events Mode Enabled Default (297):        0, 0
        Device Node (298):      "/dev/input/event7"
        Device Product ID (299):        1267, 32
        libinput Drag Lock Buttons (326):       <no items>
        libinput Horizontal Scroll Enabled (327):       1

Lenovo Thinkpad T480s (20L7CTO1WW)

/sys/class/dmi/id/modalias:
dmi:bvnLENOVO:bvrN22ET48W(1.25):bd07/18/2018:svnLENOVO:pn20L7CTO1WW:pvrThinkPadT480s:rvnLENOVO:rn20L7CTO1WW:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:

The touchpad area (without the physical buttons) is 100x63mm.

I attached a recording of that event - this is a click and a drag down-right a
little bit. When I do the same thing with my mouse, it moves the window.
With the touchpad I saw the "dragging icon", but the window did not move.

However, if I click (and hold it pressed) and drag with the same finger - it
does work. But it is very uncomfortable to do...

Also, the click-and-drag works with mtrack, on the same device and the same DE
(Plasma).

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