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[maniuz <1325881@xxxxxxxxxxxxxxxxxx>]

Hi everyone, maybe i've found the solution for this problem. I recently bought an Asus F550LD (which in realty is an X550) and i have some problem, but the strange thing is that when i try the live version of ubuntu 14.04 on this notebook in exposure everything works (or almost). So before changing it, I used the command "sudo lshw -html" and I got the hardware list of pc.
Then when I changed the notebook with the one in exposure i repeat the commandon this one. 
Finally I compared the two hardware cards. There are two difference. one litttle difference on the clock of processor (which is the same) and the Ram. The Ram is the same for power, but different for producer.

I think the problem is the Ram, on which the OS is loaded.

I report the two hardware cards for you.
I hope I was helpful

** Attachment added: "Card HW ASUS good.htm"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1325881/+attachment/4158631/+files/Card%20HW%20ASUS%20good.htm

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https://bugs.launchpad.net/bugs/1325881

Title:
  [Asus X550LD] Touchpad not working/detected Ubuntu 14.04

Status in “linux” package in Ubuntu:
  Triaged

Bug description:
  Touchpad is detected as "PS/2 Logitech Wheel Mouse". The pointer is moving itself every three seconds a cm to the left side of the screen. Can't make anything with it. No moving of cursor, no clicking.
  Also tried the newest upstream-kernel rc8 without any positive results.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-27-generic 3.13.0-27.50
  ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
  Uname: Linux 3.13.0-27-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  jibba      1820 F.... pulseaudio
   /dev/snd/controlC1:  jibba      1820 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Jun  3 11:02:01 2014
  HibernationDevice: RESUME=UUID=8565074e-439a-43bc-942f-c601146e3278
  InstallationDate: Installed on 2014-05-15 (18 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: ASUSTeK COMPUTER INC. X550LD
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic.efi.signed root=UUID=8485f9a5-8383-4eb2-8965-b2b55dc40c51 ro quiet splash acpi_backlight=vendor vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-27-generic N/A
   linux-backports-modules-3.13.0-27-generic  N/A
   linux-firmware                             1.127.2
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/17/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: X550LD.300
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: X550LD
  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.:bvrX550LD.300:bd01/17/2014:svnASUSTeKCOMPUTERINC.:pnX550LD:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX550LD:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: X550LD
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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