After a dist-upgrade using "-proposed" the root can use the USB devices. I tried chmod 666 /dev/vboxdrvu and the user can not still use USB devices.
I am exploring the /dev but I would wait some comments before provide chmod 666 to these files (and moreover after each reboot the files came- back to the original permission settings!) (1) User:root Computer:i7 Base:dev Current:/dev Command 1382 of 7 #ll vbox* -r 0 crw------- 1 root root 10, 53 mag 5 00:53 vboxnetctl 0 crw-rw-rw- 1 root root 10, 54 mag 5 00:53 vboxdrvu 0 crw------- 1 root root 10, 55 mag 5 00:53 vboxdrv vboxusb: totale 0 0 drwxr-x--- 2 root vboxusers 220 mag 5 00:53 003 (2) User:root Computer:i7 Base:dev Current:/dev Command 1382 of 8 #ll vboxusb/003/0* -r 0 crw-rw---- 1 root vboxusers 189, 268 mag 5 00:53 vboxusb/003/013 0 crw-rw---- 1 root vboxusers 189, 267 mag 5 01:04 vboxusb/003/012 0 crw-rw---- 1 root vboxusers 189, 266 mag 5 00:53 vboxusb/003/011 0 crw-rw---- 1 root vboxusers 189, 263 mag 5 00:53 vboxusb/003/008 0 crw-rw---- 1 root vboxusers 189, 262 mag 5 00:53 vboxusb/003/007 0 crw-rw---- 1 root vboxusers 189, 261 mag 5 00:53 vboxusb/003/006 0 crw-rw---- 1 root vboxusers 189, 260 mag 5 00:53 vboxusb/003/005 0 crw-rw---- 1 root vboxusers 189, 259 mag 5 00:53 vboxusb/003/004 0 crw-rw---- 1 root vboxusers 189, 257 mag 5 00:53 vboxusb/003/002 -- 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