system freezes at random when visiting a flash page in firefox like last.fm

[Brian Brodsky]

System totally freezes at random when visiting a flash page in firefox like last.fm (not even ctrl-alt-f1 will work). I have to do a hardware reset. I installed pepperflash and when I use Chromium do not have this problem. I also did not have this problem before I upgraded to 14.10 from 14.04.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: firefox 33.0+build2-0ubuntu0.14.10.1
ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
Uname: Linux 3.16.0-23-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: brian 3674 F.... pulseaudio
 /dev/snd/controlC1: brian 3674 F.... pulseaudio
BuildID: 20141013200324
Channel: Unavailable
CurrentDesktop: KDE
Date: Sat Oct 25 12:31:31 2014
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
IncompatibleExtensions:
 English (GB) Language Pack - <email address hidden>
 English (South Africa) Language Pack - <email address hidden>
 Default - {972ce4c6-7e08-4474-a285-3208198ce6fd}
InstallationDate: Installed on 2013-10-24 (365 days ago)
InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Release amd64 (20131017)
IpRoute:
 default via 192.168.1.254 dev eth0 proto static
 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.71 metric 1
IwConfig:
 eth0 no wireless extensions.

 lo no wireless extensions.
MostRecentCrashID: bp-94ec5469-1c14-4c62-b9dd-9a36b2141024
Plugins:
 Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
 Gnome Shell Integration - /usr/lib/mozilla/plugins/libgnome-shell-browser-plugin.so (gnome-shell)
 Skype Buttons for Kopete - /usr/lib/mozilla/plugins/skypebuttons.so (kopete)
 iTunes Application Detector - /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so (rhythmbox-mozilla)
PrefSources:
 prefs.js
 /usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/<email address hidden>/defaults/preferences/001ubuntu-gnome-mods.js
Profiles: Profile0 (Default) - LastVersion=33.0/20141013200324
RelatedPackageVersions:
 gnome-shell 3.12.2-1ubuntu7
 kopete 4:4.14.1-0ubuntu2
 rhythmbox-mozilla 3.0.3-1ubuntu2
RfKill:

RunningIncompatibleAddons: True
SourcePackage: firefox
UpgradeStatus: Upgraded to utopic on 2014-10-23 (1 days ago)
dmi.bios.date: 11/07/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1201
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: M5A99FX PRO R2.0
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1201:bd11/07/2012:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnM5A99FXPROR2.0:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: To be filled by O.E.M.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[smanuel (steven-d-manuel)]

I'm having similar issues with flash (specifically youtube) and firefox. The tell-tail sign besides firefox freezing is pulse audio stop working for anything. I can kill firefox (via tty1) but sound doesn't work until I either logout/login or reboot.

[smanuel (steven-d-manuel)]

Uninstalling the package "flashplugin-installer" and installing "adobe-flashplugin" seems to have solved the problem.

[madbiologist (me-again)]

Official support for Ubuntu 14.10 "Utopic Unicorn" will end on July 23, 2015. Is this issue still occurring on Ubuntu 15.04 "Vivid Vervet"?

[Launchpad Janitor (janitor)]

[Expired for flashplugin-nonfree (Ubuntu) because there has been no activity for 60 days.]