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[Alan Pater <alan.pater@xxxxxxxxx>]

It seems the TLP was not the main cause after all. I've purged TLP from
the system, rebooted multiple times, and the issue still appears, just
not as quickly.

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https://bugs.launchpad.net/bugs/1189645

Title:
  13.04,  lag under desktop environments

Status in X.org xf86-video-intel:
  New
Status in “flashplugin-nonfree” package in Ubuntu:
  New
Status in “linux” package in Ubuntu:
  Confirmed
Status in “xserver-xorg-video-intel” package in Ubuntu:
  Incomplete
Status in “flashplugin-nonfree” source package in Raring:
  New
Status in “linux” source package in Raring:
  Confirmed
Status in “tlp” source package in Raring:
  New
Status in “xserver-xorg-video-intel” source package in Raring:
  New
Status in “flashplugin-nonfree” source package in Saucy:
  New
Status in “linux” source package in Saucy:
  Confirmed
Status in “tlp” source package in Saucy:
  New
Status in “xserver-xorg-video-intel” source package in Saucy:
  Incomplete

Bug description:
  A while after logging on, the system gets really slow. Menus and
  window movements take a while to respond, switching windows is slow,
  etc.

  This is a regression, it was not like this using Ubuntu 12.10, it just
  started on 13.04. Tried different desktops (Unity, GnomeFaillback,
  Lxde). They all have the same issue.

  Testing showed the issue is triggered by the TLP power management package.
  TLP was installed in an attempt to resolve issue of fan running constantly.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-23-generic 3.8.0-23.34
  ProcVersionSignature: Ubuntu 3.8.0-23.34-generic 3.8.11
  Uname: Linux 3.8.0-23-generic i686
  ApportVersion: 2.9.2-0ubuntu8.1
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  alan       2357 F.... pulseaudio
  Date: Mon Jun 10 16:35:22 2013
  HibernationDevice: RESUME=UUID=08003f81-dc4b-4697-adb9-c4f28291be17
  InstallationDate: Installed on 2012-08-17 (297 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120724.2)
  MachineType: Dell Inc. Latitude D420
  MarkForUpload: True
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-23-generic root=UUID=84ceb2d5-8fea-40c7-8d75-337c174735ce ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-23-generic N/A
   linux-backports-modules-3.8.0-23-generic  N/A
   linux-firmware                            1.106
  RfKill:
   0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: Upgraded to raring on 2013-05-04 (37 days ago)
  dmi.bios.date: 12/18/2006
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A03
  dmi.board.name: 0TJ984
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA03:bd12/18/2006:svnDellInc.:pnLatitudeD420:pvr:rvnDellInc.:rn0TJ984:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Latitude D420
  dmi.sys.vendor: Dell Inc.

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