Three finger tap not working for "ELAN1010:00 04F3:3012 Touchpad"

[Jason Edgecombe]

three-finger taps are not working with my touchpad. One-finger, two-finger, three-finger, four-finger, and five-finger taps are detected by evtest, but only single and double finger taps are detected by xev. All other touchpad features are working, including two-finger vertical scrolling, two-finger horizontal scrolling, tap and drag, clicking on the left and right virtual buttons on the bottom of the touchpad.

My end goal is to use two-finger tap for paste (i.e. middle click) and three-finger for right-click, but the three-finger tap is not detected.

If it matters, a two-finger tap still brings up the right-click menu after running "synclient TapButton2=2".

I'm running Ubuntu 16.04.1 LTS x86_64 on a Dell Inspiron 7559. logs from xev and evtest are attached.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xserver-xorg-input-synaptics 1.8.2-1ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35
Uname: Linux 4.4.0-57-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
BootLog: Scanning for Btrfs filesystems
CurrentDesktop: i3
Date: Sun Jan 1 15:05:56 2017
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
DpkgLog:

EcryptfsInUse: Yes
InstallationDate: Installed on 2016-12-29 (3 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 8087:0a2a Intel Corp.
 Bus 001 Device 002: ID 1bcf:28b0 Sunplus Innovation Technology Inc.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Inspiron 7559
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-57-generic.efi.signed root=UUID=9b955926-5539-4bdf-ad0b-410ad281a3c3 ro rootflags=subvol=@ quiet splash
SourcePackage: xserver-xorg-input-synaptics
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/22/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.2.0
dmi.board.name: 0H0CC0
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvr1.2.0:bd09/22/2016:svnDellInc.:pnInspiron7559:pvr1.2.0:rvnDellInc.:rn0H0CC0:rvrA00:cvnDellInc.:ct10:cvrNotSpecified:
dmi.product.name: Inspiron 7559
dmi.product.version: 1.2.0
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2

[Jason Edgecombe (jason-rampaginggeek)]

output from "cat /proc/bus/input/devices"

[Jason Edgecombe (jason-rampaginggeek)]

output from "/usr/bin/evtest /dev/input/event15"

[Jason Edgecombe (jason-rampaginggeek)]

output from "xev | grep -i button" (recorded at the same time as the evtest output).

events recorded: move left, move right, left and right "soft" button clicks. one-finger tap, two-finger tap, three-finger tap, four-finger tap, five-finger tap, horizontal and vertical scrolling.

[Jason Edgecombe (jason-rampaginggeek)]

output from "xinput -list-props 14"

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.