I've only noticed this recently but I don't look in the journal often so can't say how long the issue has been there.
I tried the 4.8 kernel. The messages were still there but lower frequency 2 or 3 per minute. ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1623572 Title: Continuous messages in journal related to USB device. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1623572/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs