In safe mode, FF 18 was running fine on 12.04LTS. So, disabling all addons, it became clear that "Global Menu Bar 3.6.4" is the culprit... Just disable that add on and FF is snappy again.
-- 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/1064474 Title: Firefox high cpu usage Status in “firefox” package in Ubuntu: Confirmed Bug description: Firefox uses 76% of the cpu with no apparent reason. No flash or anything fancy, just by opening Google search page. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: firefox 15.0.1+build1-0ubuntu2 ProcVersionSignature: Ubuntu 3.5.0-17.27-generic 3.5.5 Uname: Linux 3.5.0-17-generic x86_64 NonfreeKernelModules: fglrx AddonCompatCheckDisabled: False ApportVersion: 2.6.1-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: atoulan 2588 F.... pulseaudio /dev/snd/controlC0: atoulan 2588 F.... pulseaudio BuildID: 20120907073726 Channel: Unavailable Date: Tue Oct 9 17:13:28 2012 ForcedLayersAccel: False IfupdownConfig: auto lo iface lo inet loopback InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429) IpRoute: default via 192.168.1.1 dev wlan0 proto static 169.254.0.0/16 dev wlan0 scope link metric 1000 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.15 metric 9 PrefSources: prefs.js [Profile]/extensions/{b9db16a4-6edc-47ec-a1f4-b86292ed211d}/defaults/preferences/prefs-dwhelper.js [Profile]/extensions/foxypr...@eric.h.jung/defaults/preferences/prefs.js Profiles: Profile0 (Default) - LastVersion=15.0.1/20120907073726 (In use) RelatedPackageVersions: gecko-mediaplayer 1.0.6-1ubuntu2 totem-mozilla 3.4.3-0ubuntu4 icedtea-7-plugin 1.3-1ubuntu1 adobe-flashplugin 11.2.202.238-0precise1 google-talkplugin 2.8.5.0-1 RunningIncompatibleAddons: False SourcePackage: firefox UpgradeStatus: Upgraded to quantal on 2012-10-08 (0 days ago) dmi.bios.date: 04/21/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A13 dmi.board.name: 03C6YH dmi.board.vendor: Dell Inc. dmi.board.version: A13 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A13 dmi.modalias: dmi:bvnDellInc.:bvrA13:bd04/21/2011:svnDellInc.:pnInspironN5010:pvrA13:rvnDellInc.:rn03C6YH:rvrA13:cvnDellInc.:ct8:cvrA13: dmi.product.name: Inspiron N5010 dmi.product.version: A13 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1064474/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
