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[liontamer <1509776@xxxxxxxxxxxxxxxxxx>]

Have installed 15-10 alongside 15.04.  Problem still there with 15.10
even after installing kernel 4.30-wily.  Seems to be related to scroll
bars reaching end of travel.  tag added as requested.

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https://bugs.launchpad.net/bugs/1509776

Title:
  xubuntu 15.10 synaptics ps2 touchpad mouse cursor jumps

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  running live xubuntu 15.10 from usb stick.  Synaptics ps2 touchpad configured to act as simple mouse.  Mouse cursor suddenly and frequently jumps to screen edge with no reason.  Problem not present in 15.04 with same touchpad configuration but has occurred in some earlier versions.  Not prepared to upgrade as touchpad practically unusable.
  --- 
  ApportVersion: 2.19.1-0ubuntu3
  Architecture: amd64
  CasperVersion: 1.365
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: XFCE
  DistUpgraded: Fresh install
  DistroCodename: wily
  DistroRelease: Ubuntu 15.10
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller])
     Subsystem: Pegatron Device [1b0a:2109]
     Subsystem: Pegatron Device [1b0a:2109]
  LiveMediaBuild: Xubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: Novatech Ltd. Novatech 15.6 NSPIRE Laptop
  Package: xorg 1:7.7+7ubuntu4
  PackageArchitecture: amd64
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi initrd=/casper/initrd.lz file=/cdrom/preseed/username.seed boot=casper  quiet splash --- persistent
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Tags:  wily ubuntu
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  Uname: Linux 4.2.0-16-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 12/05/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: C15B.610
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: C15B
  dmi.board.vendor: Novatech Ltd.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Novatech Ltd.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrC15B.610:bd12/05/2013:svnNovatechLtd.:pnNovatech15.6NSPIRELaptop:pvr1.0:rvnNovatechLtd.:rnC15B:rvr1.0:cvnNovatechLtd.:ct10:cvr1.0:
  dmi.product.name: Novatech 15.6 NSPIRE Laptop
  dmi.product.version: 1.0
  dmi.sys.vendor: Novatech Ltd.
  version.compiz: compiz N/A
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.64-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
  xserver.bootTime: Mon Nov  2 10:44:16 2015
  xserver.configfile: default
  xserver.errors:
   Failed to load module "nvidia" (module does not exist, 0)
   Failed to load module "nvidia" (module does not exist, 0)
   NOUVEAU(G0): Failed to initialise context object: 2D_NVC0 (0)
   NOUVEAU(G0): Error initialising acceleration.  Falling back to NoAccel
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               18412 
   vendor                                     AUO
  xserver.version: 2:1.17.2-1ubuntu9

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