This bad behavior seems to have been caused by issues with futex system calls. Here's the most detailed description I've seen so far, including a small test program that can be used to replicate the behavior (I haven't tried it since it modifies the system time):
https://lwn.net/Articles/504658/ Rather than rebooting, simply setting the system time manually or finding some other way to call settimeofday() would have also restored normal behavior. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1019708 Title: Firefox pegs CPU usage immediately, even in safe mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1019708/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
