While accessing to usb devices in virtualbox I've found that usb devices aren't available, so I've checked user groups for vboxusers and found this:

kike@ubuntu:~$ id
uid=1001(kike) gid=1001(kike) grupos=1001(kike)
kike@ubuntu:~$ groups kike
kike : kike adm cdrom sudo dip plugdev lpadmin sambashare libvirtd kvm vboxusers libvirtd
kike@ubuntu:~$ man id
kike@ubuntu:~$ id kike
uid=1001(kike) gid=1001(kike) grupos=1001(kike),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),110(lpadmin),125(sambashare),127(libvirtd),128(kvm),1002(vboxusers),127(libvirtd)
kike@ubuntu:~$ virtualbox
kike@ubuntu:~$ su kike
kike@ubuntu:~$ id
uid=1001(kike) gid=1001(kike) grupos=1001(kike),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),110(lpadmin),125(sambashare),127(libvirtd),128(kvm),1002(vboxusers)
kike@ubuntu:~$ virtualbox

The first invocation of virtualbox doesn't show any usb device available, while the latter everything is right.

Can someone explain me this behaviour or how can I check and revert it?

Would greatly appreciate any suggestions.

  • Thanks a lot. I'm not sure if editing the question for clarification is needed. Differences between both commands' (groups/id -Gn with or without nickname) output can be found, but here I get different outputs with the same command (id) before and after su command. So reading that links I understand a bit more about why this is happening, but I'm not sure to know where to start checking to mend it. Please, can you reconsider if it's duplicated or not? – Dokan Dec 28 '18 at 14:26

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