[Spice-devel] Native USB redirection does not work - (remote-viewer) did not claim interface 0 before use

Hans de Goede hdegoede at redhat.com
Thu Nov 29 01:09:15 PST 2012


Hi,

On 11/28/2012 09:56 PM, Sigbjorn Lie wrote:
>
>
>
> On Wed, November 28, 2012 21:11, Hans de Goede wrote:
>> Hi,
>>
>>
>> On 11/28/2012 09:06 PM, Sigbjorn Lie wrote:
>>
>>>
>>>
>>>
>>> On Wed, November 28, 2012 20:50, Hans de Goede wrote:
>>>
>>>> Hi,
>>>>
>>>>
>>>>
>>>> On 11/28/2012 12:45 PM, Sigbjorn Lie wrote:
>>>>
>>>>
>>>>> Hi,
>>>>>
>>>>>
>>>>>
>>>>> I receive the following errors when I attempt to use native USB redirection in RHEV 3.1
>>>>> beta. It's
>>>>> a smart card reader I am attempting to redirect into a virtual Windows 7 x64 machine.
>>>>>
>>>>> Is this a known error?
>>>>>
>>>>>
>>>>
>>>> It seems that pcscd is using the reader from userspace just like spice is, and the pcscd
>>>> driver is not properly claiming the interface, and therefor both are trying to talk to the
>>>> device at the same time!
>>>>
>>>> What might help here is to try and disable the pcscd service.
>>>>
>>>>
>>>>
>>>> Regards,
>>>>
>>>>
>>>>
>>>> Hans
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>> Hi,
>>>
>>>
>>> Thanks for your reply.
>>>
>>>
>>> I did try to run "service pcscd stop", and reconnect the smardcard reader to a different USB
>>> port, and then attempted to share the smartcard reader with the virtual machine. The same issue
>>> occurred.
>>
>> Including all the pcscd related error messages? Then I guess the pcscd process was not stopped
>> properly... Maybe try disabling the service then rebooting ?
>>
>
>
> All the messages from pcscd stopped appearing in the log after I stopped the service. I will try
> to disable pcscd with chkconfig and reboot tomorrow when I'm back at work.

But usb-redirection for the ccid device still did not work? Were there any messages in dmesg /
on the terminal where you started remote-viewer for an attempt without pcscd running?

Regards,

Hans


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