I can confirm that. Still happens with Ubuntu 15.10 and Firefox 41.0. I needed a long time to find out that Firefox causes it. Deleting .mozilla folder and disabling add-ons doesn't help. Whenever I use for example Midore and keep Firefox closed, no crashes happen.
I don't have Adobe Flash installed and only use bcmwl-kernel-source as proprietary driver (graphics are Intel HD). Unfortunately I have to use the power button to reboot the frozen system and don't have any error logs. Caps Lock button is not blinking (which usually is an indication of kernel panic). -- 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/1318403 Title: Firefox continuously freezes and freezes the rest of the system (Ubuntu 14.04) Status in firefox package in Ubuntu: Confirmed Status in mozillateam-ppa package in Ubuntu: Confirmed Bug description: Important Update: The problem is solved when I erased .mozilla folder (locate in /home) and reopen firefox to recreate the folder '.mozilla'. Maybe a corrupt file or bad writing. Problem: Without opening Firefox, the computer works perfectly, but when you open and use Firefox starts the first freeze, and the whole system starts to become extremely slow. If I try to close Firefox and reopen it back, says there is an open process that I must close. In "No Add-ons mode" the same problem happens. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: firefox 30.0~b2+build1-0ubuntu0.14.04.2 ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 AddonCompatCheckDisabled: False ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: juan 2032 F.... pulseaudio /dev/snd/controlC0: juan 2032 F.... pulseaudio BuildID: 20140508142553 Channel: Unavailable CurrentDesktop: Unity Date: Sun May 11 16:14:11 2014 Extensions: extensions.sqlite corrupt or missing ForcedLayersAccel: False IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) InstallationDate: Installed on 2014-04-18 (22 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) IpRoute: default via 192.168.0.1 dev eth0 proto static 192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.100 metric 1 IwConfig: eth0 no wireless extensions. lo no wireless extensions. Locales: extensions.sqlite corrupt or missing PrefSources: prefs.js Profiles: Profile0 (Default) - LastVersion=30.0/20140508142553 (In use) RelatedPackageVersions: rhythmbox-mozilla 3.0.2-0ubuntu2 totem-mozilla 3.10.1-1ubuntu4 RfKill: RunningIncompatibleAddons: False SourcePackage: firefox Themes: extensions.sqlite corrupt or missing UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/21/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P1.20 dmi.board.name: H61M-VS 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.:bvrP1.20:bd06/21/2011:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnH61M-VS: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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1318403/+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