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[Marcin <marcincelebucki@xxxxxxxxx>]

Christopher, the update BIOS is not solve this issue.
Output from commands [sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date]:
A08
07/13/2015

I check the modules loaded on that system and found some problem with the driver is locked each other.
The touchpad is working after disabled i2c_hid driver [ modprobe.blacklist=i2c_hid ]

xinput output:

⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
⎜   ↳ ELAN Touchscreen                        	id=10	[slave  pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad              	id=13	[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=12	[slave  keyboard (3)]
    ↳ Dell WMI hotkeys                        	id=14	[slave  keyboard (3)]
 

** Attachment added: "synclient output after i2c_hid driver blocked via kernel parameter"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1522793/+attachment/4530802/+files/synoclient.log

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1522793

Title:
  [Dell Inspiron 5547] Touchpad not working

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Touchpad not working on Dell Inspiron 5547.

  ⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
  ⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
  ⎜   ↳ ELAN Touchscreen                        	id=10	[slave  pointer  (2)]
  ⎜   ↳ DLL063E:00 06CB:2934                    	id=12	[slave  pointer  (2)]
  ⎜   ↳ SynPS/2 Synaptics TouchPad              	id=14	[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=13	[slave  keyboard (3)]
      ↳ Dell WMI hotkeys                        	id=15	[slave  keyboard (3)]

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-16-generic 4.2.0-16.19
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  ApportVersion: 2.19.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  marcin     3077 F.... pulseaudio
   /dev/snd/controlC0:  marcin     3077 F.... pulseaudio
  CasperVersion: 1.365
  CurrentDesktop: Unity
  Date: Fri Dec  4 10:59:53 2015
  LiveMediaBuild: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: Dell Inc. Inspiron 5547
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/NFS/15.10/desktop-amd64/casper/vmlinuz.efi append noprompt boot=casper modprobe.blacklist=wl rfkill.master_switch_mode=0 rfkill.default_state=1 nohibernate userfullname=User Name username=username proceed=AIO nfsroot=usb showmounts persistent-path=/NFS/15.10/desktop-amd64 persistent iso-scan/filename=/NFS/15.10/hostname-15.10-desktop-amd64.iso toram
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-16-generic N/A
   linux-backports-modules-4.2.0-16-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: 05/09/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A04
  dmi.board.name: 0CXY41
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: A04
  dmi.modalias: dmi:bvnDellInc.:bvrA04:bd05/09/2014:svnDellInc.:pnInspiron5547:pvrA04:rvnDellInc.:rn0CXY41:rvrA00:cvnDellInc.:ct8:cvrA04:
  dmi.product.name: Inspiron 5547
  dmi.product.version: A04
  dmi.sys.vendor: Dell Inc.

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