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[Bug 1530502] Re: ASUS Touchpad does not work. Some hotkeys alos don't work


With some further digging, I have discovered this is an ELAN1000
touchpad which uses the `i2C` bus instead of the `PS/2` bus which
requires different firmware.

The UX305CA apparently does not even have a PS/2 bus physically
installed. Only the I2C bus.

I'm not sure how much this helps anyone since that sort of thing is over
my head but I thought I would share that.

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  ASUS Touchpad does not work.  Some hotkeys alos don't work

Status in linux package in Ubuntu:

Bug description:
  ASUS UX305-CA laptop with a clean install of Ubuntu 15.10 and touchpad
  will not work at all.  It acts like it isn't even there.

  This is a dual-boot and touchpad works fine on Windows 10.  Appears to
  be an Elantech touchpad according to driver details in windows but
  nothing in Ubuntu lists the touchpad.

  xinput -list shows no touchpad at all, just a virtual core XTEST
  pointer and my wireless mouse.

  Notice this message under dmesg | grep pnp:

  [    0.839653] i8042: PNP: PS/2 appears to have AUX port disabled, if
  this is incorrect please boot with i8042.nopnp

  Also, the airplane mode key, which is F2, does not work and the LED will not shut off as if it is permanently in airplane mode but it is not.

  Screen brightness keys also don't work but I can work around that.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-22-generic 4.2.0-22.27
  ProcVersionSignature: Ubuntu 4.2.0-22.27-generic 4.2.6
  Uname: Linux 4.2.0-22-generic x86_64
  ApportVersion: 2.19.1-0ubuntu3
  Architecture: amd64
   /dev/snd/controlC0:  greg       1580 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Jan  1 20:56:47 2016
  HibernationDevice: RESUME=UUID=0543c424-2351-475e-b7b9-e4b67db13bf0
  InstallationDate: Installed on 2015-12-23 (9 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 8087:0a2a Intel Corp. 
   Bus 001 Device 003: ID 064e:9700 Suyin Corp. Asus Integrated Webcam
   Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-22-generic.efi.signed root=UUID=337207b1-b19f-47d0-82d0-7ec2f3b6f7ab ro quiet splash vt.handoff=7
   linux-restricted-modules-4.2.0-22-generic N/A
   linux-backports-modules-4.2.0-22-generic  N/A
   linux-firmware                            1.149
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/11/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: UX305CA.201
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UX305CA
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: ATN12345678901234567
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX305CA.201:bd09/11/2015:svnASUSTeKCOMPUTERINC.:pnUX305CA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX305CA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: UX305CA
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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