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[caprico <1432492@xxxxxxxxxxxxxxxxxx>]

Having had the issue with 14.04, 15.04 and 15.10 (also on fresh installed system). 
Only propretary driver installed is bcmwl-kernel-source, no other system modifications were done (graphics are Intel HD). 

Problem also happens with disabled Firefox addons and doesn't not happen
at all without running Firefox (I cannot confirm it with Thunderbird).

- No mouse cursor available when screen is frozen 
- ctrl-alt-f2/f3/etc don't work
- Caps lock is not blinking (so no kernel panic?)
--> shutdown with powerbutton is necessary

At the moment it is not possible to use Firefox, Midori is a ok
solution.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to firefox in Ubuntu.
https://bugs.launchpad.net/bugs/1432492

Title:
  Firefox and Thunderbird freezes entire system after a few seconds of
  use

Status in Mozilla Firefox:
  New
Status in firefox package in Ubuntu:
  Incomplete

Bug description:
  Description:	Ubuntu Vivid Vervet (development branch)
  Release:	15.04


  firefox:
    Installed: 36.0.1+build2-0ubuntu1
    Candidate: 36.0.1+build2-0ubuntu1
    Version table:
   *** 36.0.1+build2-0ubuntu1 0
          500 http://mirrors.accretive-networks.net/ubuntu/ vivid/main amd64 Packages
          100 /var/lib/dpkg/status

  
  The whole system freezes after opening firefox. Hard reset required.

  Related bug: 
  https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1432488

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: firefox 36.0.1+build2-0ubuntu1
  ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
  Uname: Linux 3.19.0-9-generic x86_64
  AddonCompatCheckDisabled: False
  ApportVersion: 2.16.2-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  black      1959 F.... pulseaudio
   /dev/snd/controlC0:  black      1959 F.... pulseaudio
  BuildID: 20150306140302
  Channel: Unavailable
  CurrentDesktop: Unity
  Date: Sun Mar 15 22:01:45 2015
  EcryptfsInUse: Yes
  Extensions: extensions.sqlite corrupt or missing
  ForcedLayersAccel: False
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
  InstallationDate: Installed on 2014-04-21 (329 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  IpRoute:
   default via 192.168.1.1 dev eth0  proto static  metric 1024 
   169.254.0.0/16 dev eth0  scope link  metric 1000 
   192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.100
  IwConfig:
   eth0      no wireless extensions.
   
   eth1      no wireless extensions.
   
   lo        no wireless extensions.
  Locales: extensions.sqlite corrupt or missing
  MostRecentCrashID: bp-d89e64a8-90ce-4922-add5-6cfba2140512
  PrefSources:
   prefs.js
   [Profile]/extensions/https-everywhere@xxxxxxx/defaults/preferences/preferences.js
   [Profile]/extensions/{0AA9101C-D3C1-4129-A9B7-D778C6A17F82}/defaults/preferences/rikaichan.js
  Profiles: Profile0 (Default) - LastVersion=36.0.1/20150306140302
  RelatedPackageVersions:
   google-talkplugin 5.38.5.0-1
   rhythmbox-mozilla 3.1-1ubuntu2
  RfKill:
   
  RunningIncompatibleAddons: False
  SourcePackage: firefox
  SubmittedCrashIDs: bp-d89e64a8-90ce-4922-add5-6cfba2140512
  Themes: extensions.sqlite corrupt or missing
  UpgradeStatus: Upgraded to vivid on 2015-03-16 (0 days ago)
  dmi.bios.date: 05/19/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1605
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: P6T DELUXE
  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.:bvr1605:bd05/19/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP6TDELUXE:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  no_proxy: localhost,127.0.0.0/8,::1

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