Today I got the information that Octoprint with the Python 2 no longer works in the long run and should be switched to the version Python 3. So I have a new image with OctoPrint 1.7.0 Python 3.7.3 OctoPi 0.18.0 and since then the communication to the printer Prusa MK3S does not work anymore. But with the Python 2 version it still worked.
Read octoprint log and find this:
Traceback (most recent call last):
File "/home/pi/oprint/lib/python3.7/site-packages/serial/serialposix.py", line 144, in set_low_latency_mode
fcntl.ioctl(self.fd, termios.TIOCSSERIAL, buf)
OSError: [Errno 95] Operation not supported
Unfortunately have no idea how to fix the problem
octoprint-systeminfo-20211014171539.zip (15.8 KB)