I have a Baofeng DR1801 Using Chirp on Windows I can read/write to the radio

Using Kubuntu  22.10, running: python3 -mchirp.wxui  I get an error message:

WARNING: Unable to select '' ERROR: uv5r._ident_radio: Radio did not respond ERROR: uv5r._ident_radio: Radio did not respond ERROR: Failed to clone: Radio did not respond Traceback (most recent call last):  File "/home/john/.local/lib/python3.10/site-packages/chirp/wxui/clone.py", line 66, in run    self._fn()  File "/home/john/.local/lib/python3.10/site-packages/chirp/drivers/uv5r.py", line 845, in sync_in    self._mmap = _do_download(self)  File "/home/john/.local/lib/python3.10/site-packages/chirp/drivers/uv5r.py", line 554, in _do_download    data = _ident_radio(radio)  File "/home/john/.local/lib/python3.10/site-packages/chirp/drivers/uv5r.py", line 549, in _ident_radio    raise error  File "/home/john/.local/lib/python3.10/site-packages/chirp/drivers/uv5r.py", line 526, in _ident_radio    data = _do_ident(radio, magic)  File "/home/john/.local/lib/python3.10/site-packages/chirp/drivers/uv5r.py", line 421, in _do_ident    raise errors.RadioError("Radio did not respond")

dmesg confirms the cable is connected to ttyUSB0.

Is this a permissions problem?

I have tried: $ sudo usermod -a -G $(stat -c %G /dev/ttyUSB0) $USER

What else can I do?