[Wayland-bugs] [Bug 102266] Asus UX410UA touchpad sometimes starts responding erratically, and seems to stop after keyboard input

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102266

            Bug ID: 102266
           Summary: Asus UX410UA touchpad sometimes starts responding
                    erratically, and seems to stop after keyboard input
           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: yohaiberreby at gmail.com

Created attachment 133556
  --> https://bugs.freedesktop.org/attachment.cgi?id=133556&action=edit
evemu recording to reproduce the bug

System setup:
- Asus UX410UA laptop with i5-7200U CPU, Intel HD 620 graphics and French
(AZERTY) keyboard
- Arch Linux, freshly updated at the time of writing (2017-08-16)
- Touchpad dimensions (as measured with a ruler, might be a little inaccurate):
103x73mm
- gnome-desktop 1:3.24.2-1
- libinput 1.8.1-1
- linux 4.12.6-1
- Tap-to-click and reverse scrolling enabled in GNOME settings


ISSUE: cursor sometimes starts jumping around erratically in response to human
input, and stops after some keyboard input. See attached evemu-record output to
reproduce. The bug occurs after just a few seconds. I've been unable to
determine what triggers the bug; I started evemu-record after the trackpad
started having the issue, which occurs once or twice a day.


Output of relevant commands:

$ cat /sys/class/dmi/id/modalias                                               
                                       
dmi:bvnAmericanMegatrendsInc.:bvrUX410UAK.301:bd12/12/2016:svnASUSTeKCOMPUTERINC.:pnUX410UAK:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX410UAK:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:


$ udevadm info /sys/class/input/event9
P:
/devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-7/i2c-ELAN1200:00/0018:04F3:3044.0001/input/input10/event9
N: input/event9
S: input/by-path/pci-0000:00:15.1-platform-i2c_designware.1-event-mouse
E:
DEVLINKS=/dev/input/by-path/pci-0000:00:15.1-platform-i2c_designware.1-event-mouse
E: DEVNAME=/dev/input/event9
E:
DEVPATH=/devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-7/i2c-ELAN1200:00/0018:04F3:3044.0001/input/input10/event9
E: ID_INPUT=1
E: ID_INPUT_HEIGHT_MM=70
E: ID_INPUT_TOUCHPAD=1
E: ID_INPUT_WIDTH_MM=103
E: ID_PATH=pci-0000:00:15.1-platform-i2c_designware.1
E: ID_PATH_TAG=pci-0000_00_15_1-platform-i2c_designware_1
E: ID_SERIAL=noserial
E: LIBINPUT_DEVICE_GROUP=18/4f3/3044/100:i2c-ELAN1200:00
E: MAJOR=13
E: MINOR=73
E: SUBSYSTEM=input
E: USEC_INITIALIZED=13853288

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