Reff ::
http://backports.ubuntuforums.com/showthread.php?t=895663 Re: Virtual box usb.
Assuming you are NOT using the OSE version from the repo.
#1 - I got this:
"By default USB support was disabled in virtualbox, so you’ll probably want to enable it. Otherwise you’ll get an error when you go into the “Settings” of your virtual machine. To correct this, you’ll need to edit the mountdevsubfs.sh file
sudo gedit /etc/init.d/mountdevsubfs.sh
Inside, you’ll see a block of code that looks like this
#
# Magic to make /proc/bus/usb work
#
#mkdir -p /dev/bus/usb/.usbfs
#domount usbfs “” /dev/bus/usb/.usbfs -obusmode=0700,devmode=0600,listmode=0644
#ln -s .usbfs/devices /dev/bus/usb/devices
#mount --rbind /dev/bus/usb /proc/bus/usb
Change it to look like this (uncomment out the region by deleting the “#’s”):
#
# Magic to make /proc/bus/usb work
#
mkdir -p /dev/bus/usb/.usbfs
domount usbfs “” /dev/bus/usb/.usbfs -obusmode=0700,devmode=0600,listmode=0644
ln -s .usbfs/devices /dev/bus/usb/devices
mount --rbind /dev/bus/usb /proc/bus/usb
Save the changes and exit.Now log out, and then log back in again for the changes to take place."
From here:
http://www.ubuntugeek.com/howto-inst...b-support.html#2 - Then this :
"I'm having some trouble with USB with VirtualBox. When I first installed virtual box, when I created a virtual machine, I received this error: Failed to create a proxy device for the USB device. (Error: VERR_FILE_NOT_FOUND).
I fixed with the solution from :
http://yoten.blogspot.com/2007/06/vi...usb-error.html by adding this to /etc/fstab
none /proc/bus/usb usbfs devgid=1001,devmode=666 0 0
USB then became available for use."
From here:
http://ubuntuforums.org/showthread.php?t=719074#3 - And then from the VirtualBox Manual:
" On Linux hosts, VirtualBox accesses USB devices on Linux through the usbfs file system. Therefore, the user executing VirtualBox needs read and write permission to the USB file system. Most distributions provide a group (e.g. usbusers) which the VirtualBox user needs to be added to. Also, VirtualBox can only proxy to virtual machines USB devices which are not claimed by a Linux host USB driver. Please refer to the Driver= entry in /proc/bus/usb/devices to see which devices are claimed."
There was no usbusers group in my Fiesty or my Hardy install so I added it and added myself to it.
Pay attention to the devgid= statement in /etc/fstab - it should be the id number of your usbusers group.
After I completed all three of these steps USB is working in all of my VBox installs.
I was getting very similar symptoms to yours just before I added the /etc/fstab line.
Good Luck - I hope this helps