[lubuntu-users] virtualbox usb devices missing

Walter Lapchynski wxl at ubuntu.com
Wed Jul 5 04:26:11 UTC 2017

On Wed, Jul 05, 2017 at 03:31:27AM +0000, Adomputer wrote:
> Virtualbox 5.1 USB devices missing.  Please help!

First off, this is not necessarily a Lubuntu issue. It's something that
should be applicable to all Ubuntu-based distros.

It should be noted, too, that you're clearly using VirtualBox from the
upstream repos rather than Ubuntu. In that case, you should probably
reach out to them for support.

That said, a lot depends on what what specific USB device you're using.
Looking at the [instructions][1] you can see, you will need an extension
pack in order to handle anything greater than USB 1.1.

Also, considering you're only listing a USB keyboard, that's not
something you should have to worry about. Regardless on what protocol
your host input is using, you don't need to worry about specifically
capturing it. VBox just does it.

Beyond that you have a more fundamental issue, namely that your user is
not currently in vboxusers, at least in the session you're in. You can
see that it is included in /etc/group:

> adamson at adamson-K43SA:~/Downloads$ cat /etc/group |grep vboxusers
> vboxusers:x:125:adamson

…however you can see it's not showing up in your groups:

> adamson at adamson-K43SA:~/Downloads$ id
> uid=1000(adamson) gid=1000(adamson) groups=1000(adamson),4(adm),6(disk),24
> (cdrom),27(sudo),30(dip),46(plugdev),109(lpadmin),124(sambashare)
> adamson at adamson-K43SA:~/Downloads$ groups
> adamson adm disk cdrom sudo dip plugdev lpadmin sambashare

Again, referring to the instructions, you will need to be in vboxusers
since that group is the only group that has access to USB device files.
In fact, there's a link to a troubleshooting [section][2] called "USB
not working" that emphasizes this fact and suggests a new login or using

[1]: https://www.virtualbox.org/manual/ch03.html#idm1624
[2]: https://www.virtualbox.org/manual/ch12.html#ts_usb-linux
[3]: http://manpages.ubuntu.com/manpages/xenial/en/man1/newgrp.1.html

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