Upstream bug #1349874 was closed "RESOLVED WORKSFORME" on 2017-03-23
with the implication that the problem was fixed in or around Firefox 55.

Now that Firefox 67 is the currently supported release in Ubuntu, is
there any reason for this bug report to remain open or can the issue
now be regarded as being fixed?


** Changed in: firefox (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1576581

Title:
  New Firefox release hogging CPU

Status in firefox package in Ubuntu:
  Incomplete

Bug description:
  Since the new Firefox release into 16.04 yesterday [1] Firefox is
  constantly using more than 100% CPU.

  [1]
  https://launchpad.net/ubuntu/+source/firefox/46.0+build5-0ubuntu0.16.04.2

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: firefox 46.0+build5-0ubuntu0.16.04.2
  ProcVersionSignature: Ubuntu 4.4.0-22.38-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  AddonCompatCheckDisabled: False
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  michal     8674 F.... pulseaudio
   /dev/snd/controlC0:  michal     8674 F.... pulseaudio
  BrokenPermissions:
   [email protected]/indexes/exclude.dat (0o400)
   [email protected]/indexes/include.dat (0o400)
   [email protected]/indexes/info.ini (0o400)
   [email protected]/indexes/scripts.db (0o400)
  BuildID: 20160425114621
  Channel: Unavailable
  CurrentDesktop: Unity
  Date: Fri Apr 29 10:35:53 2016
  ForcedLayersAccel: False
  IncompatibleExtensions:
   Polski Language Pack - [email protected]
   Default - {972ce4c6-7e08-4474-a285-3208198ce6fd}
  Plugins:
   Google Talk Plugin Video Renderer - /opt/google/talkplugin/libnpo1d.so 
(google-talkplugin)
   Google Talk Plugin - /opt/google/talkplugin/libnpgoogletalk.so 
(google-talkplugin)
   Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
   IcedTea-Web Plugin (using IcedTea-Web 1.6.2 (1.6.2-3ubuntu1)) - 
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/IcedTeaPlugin.so 
(icedtea-8-plugin)
  PrefSources:
   prefs.js
   
[Profile]/extensions/[email protected]/defaults/preferences/preferences.js
  Profiles: Profile0 (Default) - LastVersion=46.0/20160425114621 (In use)
  RelatedPackageVersions:
   google-talkplugin 5.41.0.0-1
   icedtea-8-plugin  1.6.2-3ubuntu1
  RunningIncompatibleAddons: True
  SourcePackage: firefox
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/15/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A06
  dmi.board.name: XPS 12-9Q33
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A06
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: 
dmi:bvnDellInc.:bvrA06:bd04/15/2014:svnDellInc.:pnXPS12-9Q33:pvrA06:rvnDellInc.:rnXPS12-9Q33:rvrA06:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: XPS 12-9Q33
  dmi.product.version: A06
  dmi.sys.vendor: Dell Inc.

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