My ongoing experiences with Ubuntu, and later Mythbuntu, as a media center with MythTV. I'm also using the system for a virtual machine server, a mediawiki server and a general all around home infrastructure base.

Sunday, November 29, 2009

Virtualbox USB devices greyed out

Running WinXP inside of VirtualBox and wanting to re-program my Harmony Remote, but all the USB devices were grey out. I followed these directions to fix.

First I added myself to vboxusers group:
# grep vbox /etc/group
# usermod -G vboxusers -a von
In order to get this group change to take effect in my login session, I had to logout and back in again.

Then I edited /etc/fstab to add /proc/bus/usb. I had an old entry I had to comment out.
# vi /etc/fstab
# tail -2 /etc/fstab
#/dev/bus/usb /proc/bus/usb usbfs auto 0 0
none /proc/bus/usb usbfs devgid=128,devmod=644 0 0
I had to unmount the old /proc/bus/usb and then remount it:
# umount /proc/bus/usb
# mount -a
At this point I restarted VirtualBox and was able to mount USB devices.