Quick fix: Don't leave Firefox running when not in use.
Reboot
sign in and start Firefox
goto youtube.com and watch any video
start xterm(1) run top(1) you will always see plugin-container near or at top
or
let system sit for a while or overnight
# ps -ef | less
look at the "TIME" field
or you could use
# ps -ef | sort -t: -nr -k3 | head -1
to see it sorted by TIME field
and for me this is returned:
dan 17148 15252 27 13:36 ? 00:59:04 /usr/lib/firefox/plugin-container /usr/lib/flashplugin-installer/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 15252 true plugin
And this program far out strips all other programs using CPU TIME, also it is causing a slight load.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: firefox 34.0+build2-0ubuntu0.14.04.1
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic x86_64
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: dan 2144 F.... pulseaudio
/dev/snd/controlC0: dan 2144 F.... pulseaudio
BrokenPermissions: oldbookmarks.html (0o555)
BuildID: 20141127111021
Channel: Unavailable
CurrentDesktop: Unity
Date: Fri Dec 26 16:51:32 2014
ExecutablePath: /usr/lib/firefox/firefox
ForcedLayersAccel: False
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
IncompatibleExtensions:
English (South Africa) Language Pack - <email address hidden>
English (GB) Language Pack - <email address hidden>
Default - {972ce4c6-7e08-4474-a285-3208198ce6fd}
InstallationDate: Installed on 2013-02-06 (687 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
IpRoute:
default via 192.168.1.1 dev eth0 proto static
192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.101 metric 1
MostRecentCrashID: bp-b4658248-1bb9-4d26-aae3-b30b32120831
PrefSources:
prefs.js
[Profile]/extensions/{b9db16a4-6edc-47ec-a1f4-b86292ed211d}/defaults/preferences/prefs-dwhelper.js
ProcEnviron:
LANGUAGE=en_US
PATH=(custom, user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=34.0/20141127111021 (In use)
RelatedPackageVersions:
google-talkplugin 5.38.6.0-1
rhythmbox-mozilla 3.0.2-0ubuntu2
icedtea-7-plugin 1.5-1ubuntu1
totem-mozilla 3.10.1-1ubuntu4
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
RunningIncompatibleAddons: True
SourcePackage: firefox
SubmittedCrashIDs:
bp-b4658248-1bb9-4d26-aae3-b30b32120831
bp-9d53e8ed-16bc-4544-8c81-a0e922120831
UpgradeStatus: Upgraded to trusty on 2014-04-24 (246 days ago)
dmi.bios.date: 04/25/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P2.90
dmi.board.name: X58 Extreme
dmi.board.vendor: ASRock
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.:bvrP2.90:bd04/25/2011:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnX58Extreme:rvr: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.
Status changed to 'Confirmed' because the bug affects multiple users.