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[robegue <1405084@xxxxxxxxxxxxxxxxxx>]

I've tried with xenial-desktop-amd64 live cd, but I get the same
slowness, no improvement.

I've also tried to lanuch it through virtualbox, but it doesn't help
either.

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https://bugs.launchpad.net/bugs/1405084

Title:
  Scrolling takes 5 seconds holding down arrow key at 100% zoom

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  At 100% zoom, I count about 5 seconds to scroll from first to second
  page by holding the arrow-down key. CPU is not occupied by any other
  program.

  At 180% zoom, I count about 18 seconds to scroll from first to second
  page by holding the arrow-down key.

  At 180% zoom, a two-pages text-only document takes less than 2 seconds
  to scroll from first to second page by holding the arrow-down key.

  It becomes faster (not much) when the same image covers a smaller
  area.

  From settings, I've tried to maximize the graphics memory, and to
  enable/disable hardware acceleration and antialiasing, but it doesn't
  help.

  The problem persists in LibreOffice 4.3.5-rc2 from ubuntu PPA.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: libreoffice-writer 1:4.2.7-0ubuntu2
  ProcVersionSignature: Ubuntu 3.16.0-29.39~14.04.1-generic 3.16.7-ckt2
  Uname: Linux 3.16.0-29-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Mon Dec 22 18:37:43 2014
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-06-03 (202 days ago)
  InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
  SourcePackage: libreoffice
  UpgradeStatus: No upgrade log present (probably fresh install)
  ---
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 14.04
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-06-03 (591 days ago)
  InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
  Package: xorg 1:7.7+1ubuntu8.1
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 4.2.0-21.25~14.04.1-generic 4.2.6
  Tags:  trusty
  Uname: Linux 4.2.0-21-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
  _MarkForUpload: True
  ---
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: kwin
  CurrentDesktop: KDE
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroRelease: Ubuntu 14.04
  DistroVariant: kubuntu
  DkmsStatus:
   vboxhost, 5.0.10, 3.19.0-39-generic, x86_64: installed
   vboxhost, 5.0.10, 4.2.0-21-generic, x86_64: installed
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: No
  GraphicsCard:
   Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a26] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:060a]
  InstallationDate: Installed on 2014-06-03 (592 days ago)
  InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
  MachineType: Dell Inc. XPS13 9333
  Package: xorg 1:7.7+1ubuntu8.1
  PackageArchitecture: amd64
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-21-generic root=/dev/sda3 ro quiet nosplash intel_pstate=enable pcie_aspm=force i915.enable_rc6=0 i915.lvds_downclock=0 i915.enable_fbc=0 i915.semaphores=1
  ProcVersionSignature: Ubuntu 4.2.0-21.25~14.04.1-generic 4.2.6
  Tags:  trusty kubuntu
  Uname: Linux 4.2.0-21-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
  _MarkForUpload: True
  dmi.bios.date: 03/19/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A04
  dmi.board.name: 099TN4
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA04:bd03/19/2014:svnDellInc.:pnXPS139333:pvr:rvnDellInc.:rn099TN4:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: XPS13 9333
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz N/A
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2~ubuntu14.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.4
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.7
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.6
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
  xserver.bootTime: Fri Jan  1 11:41:13 2016
  xserver.configfile: None
  xserver.errors:

  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                4933
   vendor                                     CMN
  xserver.version: 2:1.15.1-0ubuntu2.7

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