Public bug reported: I hit this reproducible bug while trying out chromeexperiments.com/webgl with the daily trusty iso.
1 Go to http://umazlizer.vkcdesign.com/ 2 click start 3 observe nothing much happening on screen, but top showing cpu at 100% or more 4 exit firefox (or navigate to another page) 5 observe firefox process still pegging cpu in top Other WebGL pages seem fine, tested oimo.js and jsOrrery ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: firefox 25.0+build3-0ubuntu0.13.10.1 ProcVersionSignature: Ubuntu 3.13.0-7.26-generic 3.13.1 Uname: Linux 3.13.0-7-generic x86_64 AddonCompatCheckDisabled: False ApportVersion: 2.13.2-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 2106 F.... pulseaudio BuildID: 20131028112446 CasperVersion: 1.337 Channel: Unavailable CurrentDesktop: Unity Date: Fri Feb 7 13:26:06 2014 ForcedLayersAccel: False IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback IpRoute: default via 10.20.1.1 dev wlan0 proto static 10.20.0.0/16 dev wlan0 proto kernel scope link src 10.20.206.79 metric 9 LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140207) Plugins: VLC Multimedia Plugin (compatible Videos 3.10.1) - /usr/lib/mozilla/plugins/libtotem-cone-plugin.so (totem-mozilla) Windows Media Player Plug-in 10 (compatible; Videos) - /usr/lib/mozilla/plugins/libtotem-gmp-plugin.so (totem-mozilla) DivX® Web Player - /usr/lib/mozilla/plugins/libtotem-mully-plugin.so (totem-mozilla) QuickTime Plug-in 7.6.6 - /usr/lib/mozilla/plugins/libtotem-narrowspace-plugin.so (totem-mozilla) iTunes Application Detector - /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so (rhythmbox-mozilla) PrefSources: prefs.js Profiles: Profile0 (Default) - LastVersion=25.0/20131028112446 RelatedPackageVersions: totem-mozilla 3.10.1-1ubuntu2 rhythmbox-mozilla 3.0.1-1ubuntu8 RunningIncompatibleAddons: False SourcePackage: firefox UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/10/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 0R6V5Y dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd12/10/2012:svnDellInc.:pnLatitudeE6230:pvr01:rvnDellInc.:rn0R6V5Y:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E6230 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. ** Affects: firefox (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug trusty -- 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/1277511 Title: Firefox process pegging CPU after visiting WebGL & webcam using page Status in “firefox” package in Ubuntu: New Bug description: I hit this reproducible bug while trying out chromeexperiments.com/webgl with the daily trusty iso. 1 Go to http://umazlizer.vkcdesign.com/ 2 click start 3 observe nothing much happening on screen, but top showing cpu at 100% or more 4 exit firefox (or navigate to another page) 5 observe firefox process still pegging cpu in top Other WebGL pages seem fine, tested oimo.js and jsOrrery ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: firefox 25.0+build3-0ubuntu0.13.10.1 ProcVersionSignature: Ubuntu 3.13.0-7.26-generic 3.13.1 Uname: Linux 3.13.0-7-generic x86_64 AddonCompatCheckDisabled: False ApportVersion: 2.13.2-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 2106 F.... pulseaudio BuildID: 20131028112446 CasperVersion: 1.337 Channel: Unavailable CurrentDesktop: Unity Date: Fri Feb 7 13:26:06 2014 ForcedLayersAccel: False IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback IpRoute: default via 10.20.1.1 dev wlan0 proto static 10.20.0.0/16 dev wlan0 proto kernel scope link src 10.20.206.79 metric 9 LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140207) Plugins: VLC Multimedia Plugin (compatible Videos 3.10.1) - /usr/lib/mozilla/plugins/libtotem-cone-plugin.so (totem-mozilla) Windows Media Player Plug-in 10 (compatible; Videos) - /usr/lib/mozilla/plugins/libtotem-gmp-plugin.so (totem-mozilla) DivX® Web Player - /usr/lib/mozilla/plugins/libtotem-mully-plugin.so (totem-mozilla) QuickTime Plug-in 7.6.6 - /usr/lib/mozilla/plugins/libtotem-narrowspace-plugin.so (totem-mozilla) iTunes Application Detector - /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so (rhythmbox-mozilla) PrefSources: prefs.js Profiles: Profile0 (Default) - LastVersion=25.0/20131028112446 RelatedPackageVersions: totem-mozilla 3.10.1-1ubuntu2 rhythmbox-mozilla 3.0.1-1ubuntu8 RunningIncompatibleAddons: False SourcePackage: firefox UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/10/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 0R6V5Y dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd12/10/2012:svnDellInc.:pnLatitudeE6230:pvr01:rvnDellInc.:rn0R6V5Y:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E6230 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. 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