i doubt if that is the case. I use xp as host. Linux as guest.
Whenever i try to release the cdrom after using it, it would be a
pain. I also do nearly the same thing-turn off the vm  and then turn
it on.

On 5/30/08, NoOp <[EMAIL PROTECTED]> wrote:
> On 05/30/2008 02:11 AM, Michael Thayer wrote:
>> Hello NoOp,
>>
>> I'm afraid not, because Linux is not really used to handling the
>> situation that drivers for a device "come and go", so it doesn't
>> re-attach the old driver when VirtualBox (and the Windows driver inside
>> of it) releases the printer.  Unplugging and replugging the printer
>> should also do the trick if that is any better for you than switching it
>> on and off.
>>
>> Regards,
>>
>> Michael
>
> Interesting & thanks for the info. After a bit more experimenting I did
> find that if I leave VB & the VM running, but just unchecking the device
> via Devices|USB Devices and then turning the printer on/off, the port is
> returned to use by linux. I can then do the reverse to return it to the
> VM. So I have to wonder if there is something in the the VB code or
> /etc/init.d/mountdevsubfs.sh that could possibly be modified to release
> the port properly. Perhaps similar to ifup/ifdown etc for a networking
> port.
>
>
>>
>> NoOp wrote:
>>> I have VB 1.5.6 running on Ubuntu 7.10 with a Win2KPro VM. USB is
>>> working but I have one problem that hopefully there is an easy solution.
>>>
>>> I have a Canon USB MP750 printer that I use with Ubuntu. Works well, but
>>> there are a few features that are not fully available w/linux. When I
>>> connect the printer in VB/VM Windows 2KPro by enabling the printers USB
>>> filter, the printer connnects and works just fine.
>>>
>>> Problem: As long VB is open, I can no longer access the printer from
>>> linux & cups; print jobs are held. That's OK too & I guess to be
>>> expected. But when I disconnect the USB port from within VB using
>>> Devices|USB Devices (uncheck the box), VB does not release the USB port.
>>> The device status box shows as unchecked/connected, but the port is not
>>> getting released. The only way that I can get the port back in
>>> linux/cups is to: 1) close down the VM, 2) exit VB, and then 3) turn the
>>> printer on/off.
>>>
>>> Is there a workaround to get VB to release the USB port?
>
>
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