I found out what was causing it: starting with v3.13-rc1, having "threadirqs" under "GRUB_CMDLINE_LINUX_DEFAULT" in the /etc/default/grub configuration file causes the behaviour I mentioned above.
After removing "threadirqs" from /etc/default/grub, the bug doesn't occur any more. I guess this is still a bug in the kernel, right? Because Linux 3.12.0-8 from the Ubuntu repositories works with "threadirqs"... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1269404 Title: BUG: soft lockup - CPU#2 stuck for 22s! [systemd-udevd:546] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1269404/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
