Thank you for the suggestion! So i tried it out, on the unmounted usb drive, and this is what i got:
http://paste.ubuntu.com/26128246/ the fear is that it might not (only) be some userspace daemon to keep the drive alive.. But it doesn't seem to me that it is easy to understand what's going on, even with btrace/blktrace.. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1733068 Title: Unmounted USB drives wake up on 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1733068/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs