mmm ok, so the same stuff worked on 14.04 but not on 16.04, and seems to affect only host, because with no guest installed you can't even see (some/all) devices.
lets try: sudo ls -l /dev/vbox* try virtualbox from bash, and look if anything is printed during the startup/run also, without checking virtual machines: open virtualbox, click settings, and tell me what is printed (screenshot is fine) on the usb section. this should be enough to troubleshoot permission issues: the next step might be to download virtualbox from oracle website, and see if the issue is debian/ubuntu packaging specific or not. (please don't do this right now, you need to purge your current virtualbox, and I don't think it will fix the issue) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1576768 Title: user can not access USB devices To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1576768/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs