libusb Assertion Failed

[iu2frl]

Hi,

I downloaded the script to a Raspberry PI and if i run rtl_test works fine but if i run the script i got:

pi@raspberrypi:~/CalibrateSDR $ python3 ./cali.py
{'f': None, 'm': 'dab', 's': 'rtlsdr', 'c': 'all', 'rs': 2048000, 'rg': 20, 'rd': 0, 'nsec': 10, 'graph': False, 'verbose': False}
let's find your SDR's oscillator precision
scanning...
starting mode: dab
Found Rafael Micro R820T tuner
[R82XX] PLL not locked!
Scanning all channels
Scanning…:   0%|                                    | 0/41 [00:00<?, ?it/s]Allocating 15 zero-copy buffers
python3: ../../libusb/os/threads_posix.h:46: usbi_mutex_lock: Assertion `pthread_mutex_lock(mutex) == 0' failed.
Aborted
pi@raspberrypi:~/CalibrateSDR $ 

[iu2frl]

Debug info;

pi@raspberrypi:~/CalibrateSDR $ python -V
Python 3.9.2
pi@raspberrypi:~/CalibrateSDR $ pip freeze
certifi==2020.6.20
chardet==4.0.0
colorzero==1.1
contourpy==1.0.7
cycler==0.11.0
distro==1.5.0
fonttools==4.42.1
gpiozero==1.6.2
idna==2.10
importlib-resources==6.0.1
kiwisolver==1.4.4
matplotlib==3.7.2
melopero-autostart==0.1.0
melopero-fan-hat==0.0.6
numpy==1.24.0
packaging==23.1
picamera2==0.3.12
pidng==4.0.9
piexif==1.1.3
Pillow==8.1.2
pyparsing==3.0.9
pyrtlsdr==0.3.0
python-apt==2.2.1
python-dateutil==2.8.2
python-prctl==1.7
requests==2.25.1
RPi.GPIO==0.7.0
SciPy==1.8.1
simplejpeg==1.6.4
six==1.16.0
spidev==3.5
ssh-import-id==5.10
toml==0.10.1
tqdm==4.66.1
urllib3==1.26.5
v4l2-python3==0.3.2
zipp==3.16.2
pi@raspberrypi:~/CalibrateSDR $ uname -a
Linux raspberrypi 6.1.21-v7+ #1642 SMP Mon Apr  3 17:20:52 BST 2023 armv7l GNU/Linux

[jyrj]

Can you try Python 3.7/ 3.6?

Check here on how to create a virtual environment for Python. https://docs.python.org/3/library/venv.html

[iu2frl]

i tried with VENV but same result