Re: VirtualBox problems

[Paulo Cavalcanti <promac@xxxxxxxxx>]

On Tue, Jul 7, 2009 at 1:51 PM, Patrick O'Callaghan <pocallaghan@xxxxxxxxx> wrote:

On Tue, 2009-07-07 at 10:59 -0500, Mikkel L. Ellertson wrote:
> Michael Semcheski wrote:
> >
> > One thing to check with your USB device, if you can't get it to work
> > on a VM - it can't be used by the host system at the same time.  Make
> > sure its unmounted by the host if you want to use it with the virtual
> > machine.
> >
> If it is grayed out, it usually means that you do not have
> permission to access the raw device. One way to fix it is to remount
> the USB file system giving group r/w access to the vboxusers group.
> For more finely grained access control you can add a udev rule that
> sets the group to vboxusers and gives group r/w permission to
> specific devices. This has been covered many times on the VirtualBox
> mailing list.

Slightly OT: My USB devices -- Nokia phone, Bluetooth dongle, Palm TX,
Ipod -- aren't recognized when I plug them in, despite having the
correct incantations in the VBox settings panel (i.e. I added filters
using "Get filter from device"). I also have the correct vboxusers
group. I was hoping VBox 3 would fix this, but it hasn't.

Try adding

none /sys/bus/usb/drivers      usbfs      devgid=509,devmode=664  0 0

to /etc/fstab, where devgid is a group allowed to access the usb devices (e.g., usbusers), which vboxusers is part of.

-- 
Paulo Roma Cavalcanti
LCG - UFRJ
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