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[Po-Hsu Lin <po-hsu.lin@xxxxxxxxxxxxx>]

Hi Keng-Yu,
Here is the `cat /proc/bus/input/devices` output:
I: Bus=0011 Vendor=0002 Product=0007 Version=01b1
N: Name="SynPS/2 Synaptics TouchPad"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input6
U: Uniq=
H: Handlers=mouse0 event5
B: PROP=5
B: EV=b
B: KEY=e520 10000 0 0 0 0
B: ABS=660800011000003

I: Bus=0018 Vendor=06cb Product=75be Version=0100
N: Name="DLL0691:00 06CB:75BE UNKNOWN"
P: Phys=
S: Sysfs=/devices/pci0000:00/INT3433:00/i2c-8/i2c-DLL0691:00/0018:06CB:75BE.0001/input/input11
U: Uniq=
H: Handlers=mouse1 event10
B: PROP=1
B: EV=b
B: KEY=6420 10000 0 0 0 0
B: ABS=260800000000003

There are two events here corresponding to these two devices, event5 and event10.
evtest with event5 does not detect anything with touching, clicking and moving on the clickpad.
Please find the attachment for the single tapping on it with xevtest event10

** Attachment added: "event10.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1439938/+attachment/4385229/+files/event10.txt

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https://bugs.launchpad.net/bugs/1439938

Title:
  [Dell Inspiron 7746] Tap to click does not work on the clickpad with
  14.04.2

Status in HWE Next Project:
  Confirmed
Status in linux-lts-utopic package in Ubuntu:
  Confirmed

Bug description:
  CID: 201408-15456 Dell Inspiron 7746

  On the clickpad of this system, user can't:
  * double tap to open a directory
  * single tap to select a file
  * tap with two-fingers to do the right click
  * Can't do drag and drop or select multiple files with two fingers (bug 1439608)

  And sometimes the cursor can't be moved (you can see from xev that it
  will send left click event automatically, hindering the cursor
  movement)

  ubuntu@201408-15456:~$ xinput list
  ⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
  ⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
  ⎜   ↳ Logitech USB-PS/2 Optical Mouse         	id=10	[slave  pointer  (2)]
  ⎜   ↳ ELAN Touchscreen                        	id=12	[slave  pointer  (2)]
  ⎜   ↳ DLL0691:00 06CB:75BE UNKNOWN            	id=13	[slave  pointer  (2)]
  ⎜   ↳ SynPS/2 Synaptics TouchPad              	id=15	[slave  pointer  (2)]
  ⎣ Virtual core keyboard                   	id=3	[master keyboard (2)]
      ↳ Virtual core XTEST keyboard             	id=5	[slave  keyboard (3)]
      ↳ Power Button                            	id=6	[slave  keyboard (3)]
      ↳ Video Bus                               	id=7	[slave  keyboard (3)]
      ↳ Power Button                            	id=8	[slave  keyboard (3)]
      ↳ Sleep Button                            	id=9	[slave  keyboard (3)]
      ↳ Integrated_Webcam_HD                    	id=11	[slave  keyboard (3)]
      ↳ AT Translated Set 2 keyboard            	id=14	[slave  keyboard (3)]
      ↳ Dell WMI hotkeys                        	id=16	[slave  keyboard (3)]

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.16.0-33-generic 3.16.0-33.44~14.04.1
  ProcVersionSignature: Ubuntu 3.16.0-33.44~14.04.1-generic 3.16.7-ckt7
  Uname: Linux 3.16.0-33-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.8
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Apr  2 23:47:18 2015
  InstallationDate: Installed on 2015-04-03 (0 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  SourcePackage: linux-lts-utopic
  UpgradeStatus: No upgrade log present (probably fresh install)

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