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[Gerry Boland <1000785@xxxxxxxxxxxxxxxxxx>]

Perhaps unrelated, but I find having skype running causes unity-panel-
service to use mugh more CPU than normal. Watching it with top, it uses
100% of a cpu core on every alt-tab. Disabling skype, CPU usage looks
more normal

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https://bugs.launchpad.net/bugs/1000785

Title:
  unity-panel-service cause high cpu usage during wifi-connection

Status in The Ubuntu Power Consumption Project:
  Confirmed
Status in Unity:
  Confirmed
Status in “unity” package in Ubuntu:
  Confirmed

Bug description:
  During slow wifi-connection (f.e. lazy DHCP-server or low signal
  quality) unity-panel-service consume large part of cpu (up to 50%)
  while wifi-icon shows 'connecting' state.

  That problem disappear after connection established, but during travel
  there is many slow or broken wifi-networks with very long connection
  interval. This cause high cpu load for long time (sometimes minutes
  and even hours if we get in situation of constant disconnecting) and,
  of cause, quick battery discharge.

  Steps to reproduce:

  Set up wifi network with dynamic IP without active DHCP-server
  try to establish connection
  Checks the cpu usage of unity-panel-service

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: unity-services 5.12-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
  Uname: Linux 3.2.0-24-generic i686
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.0.1-0ubuntu7
  Architecture: i386
  CompizPlugins: [core,bailer,composite,opengl,compiztoolbox,decor,imgpng,expo,scale,workarounds,move,place,gnomecompat,mousepoll,vpswitch,snap,wall,resize,grid,staticswitcher,unityshell]
  CompositorRunning: compiz
  Date: Thu May 17 18:33:55 2012
  DistUpgraded: Fresh install
  DistroCodename: quantal
  DistroVariant: ubuntu
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21da]
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
  MachineType: LENOVO 4290RB3
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=ff771e68-857e-4d94-8f9a-90822e3deab4 ro crashkernel=384M-2G:64M,2G-:128M
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/01/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8DET49WW (1.19 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4290RB3
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr8DET49WW(1.19):bd07/01/2011:svnLENOVO:pn4290RB3:pvrThinkPadX220:rvnLENOVO:rn4290RB3:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4290RB3
  dmi.product.version: ThinkPad X220
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.7.8-0ubuntu1
  version.libdrm2: libdrm2 2.4.32-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu4
  version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu11
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

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