I have had a very similar experience this week although nothing to do with Facebook.
I am now using QupZilla because Firefox is freezing my system so often. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-lts-utopic in Ubuntu. https://bugs.launchpad.net/bugs/1567324 Title: System crashes when using Firefox Status in linux-lts-utopic package in Ubuntu: New Bug description: I am flagging this as a linux bug because it occurs after an update of the kernel, but this could as well be a Firefox issue. Yesterday (2016-04-06), as part of the regular package updates, the kernel was updated to version 3.16.0-69. Since then, when I open Facebook on Firefox the system crashes abruptly after a couple of seconds. Everything freezes, the system does not react to mouse or keyboard inputs, and the only thing I can do is force-reboot the computer. The problem occurs consistently with Facebook. It also occured on another website (pluralsight.com), but I was not able to reproduce. The only common point between those two websites I can see, as opposed to other websites where there is no problem, is that they consume a lot of resources. I will add other sites here if I find any. The problem does not occur when opening Facebook from Chromium. Please find below an extract of apt/history.log showing the updated packages: Start-Date: 2016-04-06 10:28:00 Commandline: aptdaemon role='role-commit-packages' sender=':1.55' Install: linux-image-extra-3.16.0-69-generic:amd64 (3.16.0-69.89~14.04.1), linux-headers-3.13.0-85-generic:amd64 (3.13.0-85.129), linux-headers-3.16.0-69:amd64 (3.16.0-69.89~14.04.1), linux-headers-3.13.0-85:amd64 (3.13.0-85.129), linux-image-3.16.0-69-generic:amd64 (3.16.0-69.89~14.04.1), linux-headers-3.16.0-69-generic:amd64 (3.16.0-69.89~14.04.1) Upgrade: linux-headers-generic:amd64 (3.13.0.83.89, 3.13.0.85.91), linux-image-generic-lts-utopic:amd64 (3.16.0.67.58, 3.16.0.69.60), linux-generic-lts-utopic:amd64 (3.16.0.67.58, 3.16.0.69.60), linux-libc-dev:amd64 (3.13.0-83.127, 3.13.0-85.129), linux-headers-generic-lts-utopic:amd64 (3.16.0.67.58, 3.16.0.69.60) End-Date: 2016-04-06 10:30:57 I am attaching an extract of /var/log/kern.log that contains some data logged when the crash happened. It seems to be binary data as the less command just shows a sequence of "^@" characters. The line before is not related I think, as it was already present before the crash. The line after is the reboot starting. I hope the text editor did not alter the binary data when saving the file, if it did please let me know a way of extracting the data. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.16.0-69-generic 3.16.0-69.89~14.04.1 ProcVersionSignature: Ubuntu 3.16.0-69.89~14.04.1-generic 3.16.7-ckt25 Uname: Linux 3.16.0-69-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 CurrentDesktop: LXDE Date: Thu Apr 7 11:21:52 2016 InstallationDate: Installed on 2015-03-30 (373 days ago) InstallationMedia: Lubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) SourcePackage: linux-lts-utopic UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1567324/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
