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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318403 Title: Firefox continuously freezes and freezes the rest of the system (Ubuntu 14.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1318403/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs