Public bug reported:

I have 5 windows with lots of tabs, that are brought up each time FF loads.
I looked at one or two tabs, deleted a tab or two, I think, then went and 
started checking my email at AOL.
I looked at one msg., clicked on the up-arrow to look at the prev. msg., and 
nothing happened - thought I'd missed the button, and tried again - nothing.  
Tried down-arrow. Nothing.  Tried clicking on other tabs - nothing. Tried other 
windows - sometimes the focus tab was running a routine that changed a logo 
picture - that kept going.  If I minimized a window or -un-minimised it, I 
would see a string of increasingly smaller window title-bars descending the 
screen for the minimising  visual effect (or the reverse), but no tab/window 
would display, nor was usable.
I went into "htop" and noted the process# of the Firefox process with the 
longest run-time, and called ubuntu-bug with it.
End of story.
I'll now go back into htop and kill the process, and restart FF.  Probably 
everything will be fine.  I may kill off a few tabs, just to be neat, and give 
FF less to do, in case it might make some difference...
Hope that the files ubuntu-bug pulls into this bug report are of use to 
someone, as this description probably isn't...
-Scott


Description:    Ubuntu 12.04 LTS  (Well, strictly speaking, Lubuntu 12.04 isn't 
an LTS...)
Release:        12.04


firefox:
  Installed: 12.0+build1-0ubuntu0.12.04.1
  Candidate: 12.0+build1-0ubuntu0.12.04.1
  Version table:
 *** 12.0+build1-0ubuntu0.12.04.1 0
        500 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main i386 
Packages
        500 http://security.ubuntu.com/ubuntu/ precise-security/main i386 
Packages
        100 /var/lib/dpkg/status
     11.0+build1-0ubuntu4 0
        500 http://us.archive.ubuntu.com/ubuntu/ precise/main i386 Packages

Linux scott-Asus-M2N68-AM-Plus 3.2.0-24-generic-tuxonice #37~ppa3-Ubuntu
SMP Sat Apr 28 12:24:41 UTC 2012 i686 athlon i386 GNU/Linux

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: firefox 12.0+build1-0ubuntu0.12.04.1
ProcVersionSignature: Ubuntu 3.2.0-24.37~ppa3-generic-tuxonice 3.2.14
Uname: Linux 3.2.0-24-generic-tuxonice i686
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  scott      1536 f.... lxpanel
BuildID: 20120423122624
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'NVidia'/'HDA NVidia at 0xdfff4000 irq 21'
   Mixer name   : 'Realtek ALC887'
   Components   : 'HDA:10ec0887,104383bc,00100202'
   Controls      : 40
   Simple ctrls  : 21
Card1.Amixer.info:
 Card hw:1 'U0x46d0x825'/'USB Device 0x46d:0x825 at usb-0000:00:02.0-1.1, full 
speed'
   Mixer name   : 'USB Mixer'
   Components   : 'USB046d:0825'
   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 4608 [75%] [24.00dB] [on]
Channel: release
Date: Fri May 11 22:57:26 2012
ExecutablePath: /usr/lib/firefox/firefox
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Lubuntu 12.04 "Precise Pangolin" - Release i386 (20120423)
IpRoute:
 default via 192.168.1.1 dev eth0  proto static 
 192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.116  metric 1 
 192.168.1.0/24 dev wlan0  proto kernel  scope link  src 192.168.1.117  metric 2
PciNetwork:
 
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Profiles:
 Profile0 (Default) - LastVersion=12.0/20120423122624 (Running)
 Profile1 - LastVersion=10.0.2/20120216101208 (Out of date)
RfKill:
 
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/10/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1802
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M2N68-AM Plus
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr1802:bd06/10/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM2N68-AMPlus:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

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


** Tags: apport-bug i386 precise release-channel

-- 
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/998312

Title:
  Firefox froze

Status in “firefox” package in Ubuntu:
  New

Bug description:
  I have 5 windows with lots of tabs, that are brought up each time FF loads.
  I looked at one or two tabs, deleted a tab or two, I think, then went and 
started checking my email at AOL.
  I looked at one msg., clicked on the up-arrow to look at the prev. msg., and 
nothing happened - thought I'd missed the button, and tried again - nothing.  
Tried down-arrow. Nothing.  Tried clicking on other tabs - nothing. Tried other 
windows - sometimes the focus tab was running a routine that changed a logo 
picture - that kept going.  If I minimized a window or -un-minimised it, I 
would see a string of increasingly smaller window title-bars descending the 
screen for the minimising  visual effect (or the reverse), but no tab/window 
would display, nor was usable.
  I went into "htop" and noted the process# of the Firefox process with the 
longest run-time, and called ubuntu-bug with it.
  End of story.
  I'll now go back into htop and kill the process, and restart FF.  Probably 
everything will be fine.  I may kill off a few tabs, just to be neat, and give 
FF less to do, in case it might make some difference...
  Hope that the files ubuntu-bug pulls into this bug report are of use to 
someone, as this description probably isn't...
  -Scott

  
  Description:  Ubuntu 12.04 LTS  (Well, strictly speaking, Lubuntu 12.04 isn't 
an LTS...)
  Release:      12.04

  
  firefox:
    Installed: 12.0+build1-0ubuntu0.12.04.1
    Candidate: 12.0+build1-0ubuntu0.12.04.1
    Version table:
   *** 12.0+build1-0ubuntu0.12.04.1 0
          500 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main i386 
Packages
          500 http://security.ubuntu.com/ubuntu/ precise-security/main i386 
Packages
          100 /var/lib/dpkg/status
       11.0+build1-0ubuntu4 0
          500 http://us.archive.ubuntu.com/ubuntu/ precise/main i386 Packages

  Linux scott-Asus-M2N68-AM-Plus 3.2.0-24-generic-tuxonice
  #37~ppa3-Ubuntu SMP Sat Apr 28 12:24:41 UTC 2012 i686 athlon i386
  GNU/Linux

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: firefox 12.0+build1-0ubuntu0.12.04.1
  ProcVersionSignature: Ubuntu 3.2.0-24.37~ppa3-generic-tuxonice 3.2.14
  Uname: Linux 3.2.0-24-generic-tuxonice i686
  AddonCompatCheckDisabled: False
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu7
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  scott      1536 f.... lxpanel
  BuildID: 20120423122624
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'NVidia'/'HDA NVidia at 0xdfff4000 irq 21'
     Mixer name : 'Realtek ALC887'
     Components : 'HDA:10ec0887,104383bc,00100202'
     Controls      : 40
     Simple ctrls  : 21
  Card1.Amixer.info:
   Card hw:1 'U0x46d0x825'/'USB Device 0x46d:0x825 at usb-0000:00:02.0-1.1, 
full speed'
     Mixer name : 'USB Mixer'
     Components : 'USB046d:0825'
     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 4608 [75%] [24.00dB] [on]
  Channel: release
  Date: Fri May 11 22:57:26 2012
  ExecutablePath: /usr/lib/firefox/firefox
  ForcedLayersAccel: False
  IfupdownConfig:
   auto lo
   iface lo inet loopback
  InstallationMedia: Lubuntu 12.04 "Precise Pangolin" - Release i386 (20120423)
  IpRoute:
   default via 192.168.1.1 dev eth0  proto static 
   192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.116  metric 
1 
   192.168.1.0/24 dev wlan0  proto kernel  scope link  src 192.168.1.117  
metric 2
  PciNetwork:
   
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  Profiles:
   Profile0 (Default) - LastVersion=12.0/20120423122624 (Running)
   Profile1 - LastVersion=10.0.2/20120216101208 (Out of date)
  RfKill:
   
  RunningIncompatibleAddons: False
  SourcePackage: firefox
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/10/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1802
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: M2N68-AM Plus
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr1802:bd06/10/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM2N68-AMPlus:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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