My observation, it happens typically when i do something on google particularly gmail. I don't recall anything like that happening in calendar, docs or youtube. To my observation, no other sites in my experience have this (hang condition) problem.
At times, i can do a force quit. In that case, i usually logout & login again just to restart X. If it is a complete hang, & that happens periodically, at least 1ce a day, the power button does work for me, but you chaps are right, ctrl-alt whatever, not even f1-f4 work; so that i can at least do a clean shutdown. The system is completely hung. Here's my system info; Acer aspire 4755g intel core i5-2410M NVIDIA GeForce 540M Mem : 8gb Firefox 33 Ubuntu 14.04.1 I followed this proc to install bublebee. Dono if i did something right/wrong, but at that time, it worked. I would say it started happening about 2wk to a month ago soon after i did an update. http://coffeecup83.blogspot.sg/2013/04/ubuntu-1304-nvidia-optimus-bumblebee.html personally, i'm not really sure it's a firefox problem since it only happens on google & in particualr gmail! -- 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