[Bug 1791473] Re: Touchpad Elantech ELAN1200 does not get disabled in tablet mode of Asus ZenBook Flip UX561UD convertible laptop

[Mario Vukelic]

** Attachment added: "libinput_list-devices.txt"
   https://bugs.launchpad.net/ubuntu/+source/acpid/+bug/1791473/+attachment/5186637/+files/libinput_list-devices.txt

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Title:
  Touchpad Elantech ELAN1200 does not get disabled in tablet mode of
  Asus ZenBook Flip UX561UD convertible laptop

Status in acpid package in Ubuntu:
  New

Bug description:
  Sorry if acpid is not the right package for this. The blueprint for convertibles mentions /etc/acpi/twist-tabletmode.sh, though the blueprint is old and where this would be implemented may have changed: 
  https://blueprints.launchpad.net/ubuntu/+spec/client-1305-convertibles-and-touch-desktop

  Repro:
  1. Fold display back to tent mode and further to tablet mode

  -> The touchpad should get disabled, but doesn't. The keyboard does
  get disabled, and so the mode is correctly detected somewhere

  The touchpad is an ELAN1200 and the ELAN entries from libinput list-
  devices (under Wayland) are attached.

  cat /proc/bus/input/devices gives:
  I: Bus=0018 Vendor=04f3 Product=3066 Version=0100
  N: Name="ELAN1200:00 04F3:3066 Touchpad"
  P: Phys=i2c-ELAN1200:00
  S: Sysfs=/devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-1/i2c-ELAN1200:00/0018:04F3:3066.0002/input/input20
  U: Uniq=
  H: Handlers=mouse1 event12 
  B: PROP=5
  B: EV=1b
  B: KEY=e520 10000 0 0 0 0
  B: ABS=260800000000003
  B: MSC=20

  kernel.org has this documentation about Elantech pads:
  https://www.kernel.org/doc/html/v4.16/input/devices/elantech.html

  Driver info on github:
  https://github.com/mishurov/linux_elan1200_touchpad

  Please let me know if you need any other info, thanks

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: acpid 1:2.0.28-1ubuntu1
  ProcVersionSignature: Ubuntu 4.17.0-9.10-generic 4.17.17
  Uname: Linux 4.17.0-9-generic x86_64
  ApportVersion: 2.20.10-0ubuntu9
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Sep  9 00:41:36 2018
  InstallationDate: Installed on 2018-09-05 (3 days ago)
  InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha amd64 (20180822)
  SourcePackage: acpid
  UpgradeStatus: No upgrade log present (probably fresh install)

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