According to the comment by Christian Mallwitz, this is caused by a high number of messages coming from the kernel that require processing
** Package changed: udev (Ubuntu) => linux (Ubuntu) -- High cpu usage after upgrade to 141-1.1 https://bugs.launchpad.net/bugs/379780 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs