2012/2/17 Yunong Pang <029...@gmail.com>:
>
> OS:  Fedora 14  (2.6.35.10-74.fc14.i686)
>
>
> Info from DEBUG
>>>> dev.read(0x86, 1024, 0, 100)
> 2012-02-17 23:34:41,768
> DEBUG:usb.backend.libusb10:_LibUSB.get_configuration_descriptor(<usb.backend.libusb10._Device
> object at 0x99fffec>, 0)
> 2012-02-17 23:34:41,769
> DEBUG:usb.backend.libusb10:_LibUSB.get_interface_descriptor(<usb.backend.libusb10._Device
> object at 0x99fffec>, 0, 0, 0)
> 2012-02-17 23:34:41,769
> DEBUG:usb.backend.libusb10:_LibUSB.get_configuration_descriptor(<usb.backend.libusb10._Device
> object at 0x99fffec>, 0)
> 2012-02-17 23:34:41,770
> DEBUG:usb.backend.libusb10:_LibUSB.bulk_read(c_void_p(161650472), 134, 0,
> 1024, 100)
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "/usr/lib/python2.7/site-packages/usb/core.py", line 624, in read
>     self.__get_timeout(timeout)
>   File "/usr/lib/python2.7/site-packages/usb/_debug.py", line 53, in
> do_trace
>     return f(*args, **named_args)
>   File "/usr/lib/python2.7/site-packages/usb/backend/libusb10.py", line 483,
> in bulk_read
>     timeout)
>   File "/usr/lib/python2.7/site-packages/usb/backend/libusb10.py", line 581,
> in __read
>     timeout))
>   File "/usr/lib/python2.7/site-packages/usb/backend/libusb10.py", line 353,
> in _check
>     raise USBError(_str_error[retval.value])
> usb.core.USBError: Operation timed out
>

Could you send me the output of the command 'lsusb -vv' for your device, please?

-- 
Best Regards,
Wander Lairson Costa

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