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[John <john.levin@xxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1322751 ***
    https://bugs.launchpad.net/bugs/1322751

** This bug is no longer a duplicate of bug 1516308
   Compiz uses 100% CPU when desktop is locked
** This bug has been marked a duplicate of bug 1322751
   Compiz running on Intel Haswell GPU has 100% CPU usage when computer is locked

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https://bugs.launchpad.net/bugs/1508219

Title:
  Possible high CPU usage by firefox while screen is locked

Status in firefox package in Ubuntu:
  Confirmed

Bug description:
  It's a bit fuzzy report, I have to admit, and more like a feeling, as
  I can't check it out too well, but I haven't experienced that in
  previous Ubuntu versions before upgrading to Wily.

  I have firefox running with many tabs open. The CPU usage (without too
  much active pages, ie no videos etc) is about 10-30% at max. If I lock
  my computer I always hear the fan of the notebook switches onto a
  higher speed, which disappears if I unlock the screen. It's a bit hard
  to check it out, if it's really because of firefox, as I can only use
  "top" if my desktop is unlocked of course, but I can still notice that
  CPU usage of firefox is still about decreasing after unlocking.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: firefox 41.0.2+build2-0ubuntu1
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic i686
  AddonCompatCheckDisabled: False
  ApportVersion: 2.19.1-0ubuntu3
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  lgb        2439 F.... pulseaudio
  BuildID: 20151016093451
  Channel: Unavailable
  CurrentDesktop: Unity
  Date: Tue Oct 20 23:48:56 2015
  DefaultProfilePlugins:
   IcedTea-Web Plugin (using IcedTea-Web 1.5.2 (1.5.2-1ubuntu2)) - /usr/lib/jvm/java-7-openjdk-i386/jre/lib/i386/IcedTeaPlugin.so (icedtea-7-plugin)
   Google Talk Plugin Video Renderer - /opt/google/talkplugin/libnpo1d.so (google-talkplugin)
   iTunes Application Detector - /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so (rhythmbox-mozilla)
   Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
   Google Talk Plugin - /opt/google/talkplugin/libnpgoogletalk.so (google-talkplugin)
  DefaultProfilePrefSources: prefs.js
  ForcedLayersAccel: False
  IfupdownConfig:
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2012-03-03 (1326 days ago)
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  MostRecentCrashID: bp-c1602958-abcf-49cb-af9c-c95172151003
  Profile1Extensions: extensions.sqlite corrupt or missing
  Profile1IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
  Profile1Locales: extensions.sqlite corrupt or missing
  Profile1Plugins:
   IcedTea-Web Plugin (using IcedTea-Web 1.5.2 (1.5.2-1ubuntu2)) - /usr/lib/jvm/java-7-openjdk-i386/jre/lib/i386/IcedTeaPlugin.so (icedtea-7-plugin)
   Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
   iTunes Application Detector - /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so (rhythmbox-mozilla)
  Profile1PrefSources: prefs.js
  Profile1Themes: extensions.sqlite corrupt or missing
  Profiles:
   Profile0 (Default) - LastVersion=41.0.2/20151016093451 (In use)
   Profile1 - LastVersion=39.0a2/20150414004003 (Out of date)
  RelatedPackageVersions:
   icedtea-7-plugin  1.5.2-1ubuntu2
   google-talkplugin 5.41.0.0-1
   rhythmbox-mozilla 3.2.1-1ubuntu3
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  RunningIncompatibleAddons: True
  SourcePackage: firefox
  UpgradeStatus: Upgraded to wily on 2015-10-18 (2 days ago)
  dmi.bios.date: 11/04/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8GET38WW (1.15 )
  dmi.board.name: 5016NW6
  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:bvr8GET38WW(1.15):bd11/04/2011:svnLENOVO:pn5016NW6:pvrThinkPadL520:rvnLENOVO:rn5016NW6:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 5016NW6
  dmi.product.version: ThinkPad L520
  dmi.sys.vendor: LENOVO

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