[Bug 990971] [NEW] Switching tab in Firefox or switching to Firefox from a different application makes unity-panel-service and hud-service use up most CPU

[Anders Nawroth]

Public bug reported:

This is a duplicate of bug #968533, I couldn't add debug information
there, as apport crashed when I wanted it to save the report to a file.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: firefox 12.0+build1-0ubuntu0.12.04.1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  anders     2673 F.... pulseaudio
 /dev/snd/controlC0:  anders     2673 F.... pulseaudio
BuildID: 20120423122928
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf9ff8000 irq 44'
   Mixer name	: 'Realtek ALC1200'
   Components	: 'HDA:10ec0888,104382fe,00100101'
   Controls      : 41
   Simple ctrls  : 23
Card1.Amixer.info:
 Card hw:1 'U0x46d0x807'/'USB Device 0x46d:0x807 at usb-0000:00:1d.7-1, high speed'
   Mixer name	: 'USB Mixer'
   Components	: 'USB046d:0807'
   Controls      : 2
   Simple ctrls  : 1
Card1.Amixer.values:
 Simple mixer control 'Mic',0
   Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
   Capture channels: Mono
   Limits: Capture 0 - 6144
   Mono: Capture 6144 [100%] [30.00dB] [on]
Channel: release
Date: Sun Apr 29 11:02:52 2012
ForcedLayersAccel: False
IncompatibleExtensions: Firebug - ID=firebug at software.joehewitt.com, Version=1.9.1, minVersion=5.0, maxVersion=12.0a1, Location=app-profile, Type=extension, Active=Yes
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
IpRoute:
 default via 192.168.1.1 dev br0  metric 100 
 169.254.0.0/16 dev br0  scope link  metric 1000 
 192.168.1.0/24 dev br0  proto kernel  scope link  src 192.168.1.64
IwConfig:
 lo        no wireless extensions.
 
 br0       no wireless extensions.
 
 eth0      no wireless extensions.
Profiles: Profile0 (Default) - LastVersion=12.0/20120423122928 (Running)
RfKill:
 0: hci0: Bluetooth
 	Soft blocked: no
 	Hard blocked: no
RunningIncompatibleAddons: True
SourcePackage: firefox
UpgradeStatus: Upgraded to precise on 2012-04-28 (0 days ago)
UserAsoundrc:
 
UserJS: user.js exists but isn't parseable - Unexpected character
dmi.bios.date: 06/12/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0703
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5Q-PRO
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0703:bd06/12/2008:svnSystemmanufacturer:pnP5Q-PRO:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5Q-PRO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: P5Q-PRO
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise release-channel

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https://bugs.launchpad.net/bugs/990971

Title:
  Switching tab in Firefox or switching to Firefox from a different
  application makes unity-panel-service and hud-service use up most CPU

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