usb.core.USBError: [Errno 13] Access denied (insufficient permissions)
Tb8854 opened this issue · 4 comments
spectrometer and system information
- model: HDX
- operating system: Windows 10 64 Bit
- python version: Python 3.9.1
- python-seabreeze version: current master
- installed-via: pip
steps to reproduce
C:\WINDOWS\system32>python
Python 3.9.1 (default, Dec 11 2020, 09:29:25) [MSC v.1916 64 bit (AMD64)] :: Anaconda, Inc. on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import seabreeze
>>> seabreeze.use('pyseabreeze')
>>> from seabreeze.spectrometers import Spectrometer, list_devices
>>> list_devices()
Traceback (most recent call last):
File "", line 1, in
File "C:\Users\asty_admin\miniconda3\lib\site-packages\seabreeze\spectrometers.py", line 36, in list_devices
return list_devices._api.list_devices()
File "C:\Users\asty_admin\miniconda3\lib\site-packages\seabreeze\pyseabreeze\api.py", line 104, in list_devices
dev.open()
File "C:\Users\asty_admin\miniconda3\lib\site-packages\seabreeze\pyseabreeze\devices.py", line 346, in open
self._transport.open_device(self._raw_device)
File "C:\Users\asty_admin\miniconda3\lib\site-packages\seabreeze\pyseabreeze\transport.py", line 201, in open_device
if pyusb_device.is_kernel_driver_active(0):
File "C:\Users\asty_admin\miniconda3\lib\site-packages\usb\core.py", line 1097, in is_kernel_driver_active
self._ctx.managed_open()
File "C:\Users\asty_admin\miniconda3\lib\site-packages\usb\core.py", line 113, in wrapper
return f(self, *args, **kwargs)
File "C:\Users\asty_admin\miniconda3\lib\site-packages\usb\core.py", line 131, in managed_open
self.handle = self.backend.open_device(self.dev)
File "C:\Users\asty_admin\miniconda3\lib\site-packages\usb\backend\libusb1.py", line 804, in open_device
return _DeviceHandle(dev)
File "C:\Users\asty_admin\miniconda3\lib\site-packages\usb\backend\libusb1.py", line 652, in init
_check(_lib.libusb_open(self.devid, byref(self.handle)))
File "C:\Users\asty_admin\miniconda3\lib\site-packages\usb\backend\libusb1.py", line 604, in _check
raise USBError(_strerror(ret), ret, _libusb_errno[ret])
usb.core.USBError: [Errno 13] Access denied (insufficient permissions)
Any idea why this might be happening? Trying to connect to HDX. This is a fresh computer, and just setting out installing everything again.
Resolved - It just required a restart! - shame it took me 3 hours to come up with that :/
Almost there - now I get the strange behaviour of
>>> devices
[<SeaBreezeDevice HDX:?>]
>>> spec = Spectrometer.from_first_available()
Traceback (most recent call last):
File "", line 1, in
File "C:\Users\asty_admin\miniconda3\lib\site-packages\seabreeze\spectrometers.py", line 91, in from_first_available
raise cls._backend.SeaBreezeError("No unopened device found.")
seabreeze.pyseabreeze.exceptions.SeaBreezeError: No unopened device found.
Which I'm not quite sure how to deal with...
Resolved by reinstalling Anaconda and using spyder and messing with the paths.
Glad you could fix it.
Do you think the docs could be improved to prevent the environment setup issue you ran into?
If so, I'd be happy to get feedback on how to improve them :)
Cheers 😃
Andreas