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My desk had become a rats nest of cables so I stripped them all out and ran them all neatly. I have double checked the USB connectivity with the axidraw by disconnecting it and trying to do extensions/axidraw control/setup/apply. I get the expected message:
“No available axidraw units found on USB.
Please check your connection(s) and try again.”With the axidraw USB and power plugged in I get the following Python error. Any suggestions?
Traceback (most recent call last):
File “axidraw_control.py”, line 32, in <module>
exit_status.run(e.affect)
File “/home/glenn/.config/inkscape/extensions/axidraw_deps/ink_extensions_utils/exit_status.py”, line 26, in run
return func(*args, **kwargs)
File “/home/glenn/.config/inkscape/extensions/axidraw_deps/ink_extensions/inkex.py”, line 291, in affect
self.effect()
File “/home/glenn/.config/inkscape/extensions/axidraw_deps/axidrawinternal/axidraw_control.py”, line 130, in effect
EBBList = ebb_serial.listEBBports()
File “/home/glenn/.config/inkscape/extensions/axidraw_deps/plotink/ebb_serial.py”, line 208, in listEBBports
com_ports_list = list(comports())
File “/home/glenn/.config/inkscape/extensions/axidraw_deps/serial/tools/list_ports_linux.py”, line 102, in comports
for info in [SysFS(d) for d in devices]
File “/home/glenn/.config/inkscape/extensions/axidraw_deps/serial/tools/list_ports_linux.py”, line 102, in <listcomp>
for info in [SysFS(d) for d in devices]
File “/home/glenn/.config/inkscape/extensions/axidraw_deps/serial/tools/list_ports_linux.py”, line 48, in __init__
num_if = int(self.read_line(self.usb_device_path, ‘bNumInterfaces’))
TypeError: int() argument must be a string, a bytes-like object or a number, not ‘NoneType’The “ugly” error message is due to an unhandled linux-specific situation in an underlying software library that the AxiDraw software uses. (We have submitted a patch to fix their error message, but it hasn’t been accepted yet.)
What the message *should* say instead of that is something like “Failed to connect to AxiDraw.” Since you’re seeing a difference versus fully unconnected, I’d recommend resetting the AxiDraw and/or restarting your computer. Unplug it from both power and USB, and then connect it by USB alone until you’re making a good connection again. If that doesn’t help, unplug it again and try restarting your computer before plugging in USB again.
Make sure that you’re in dialout and have logged out and back in, and then yes, try the apt method.
I imagine that’s Inkscape 0.92, which runs with python 2.7. It’s likely using a different python on your system, if you’re getting that message.
If you want to run that version of Inkscape, you’ll need to use an older release of the AxiDraw software that supports it. (The current AxiDraw software requires Inkscape 1.0 or newer.) You can find Linux install instructions for 0.92 on an old version of our wiki page:
https://wiki.evilmadscientist.com/index.php?title=Axidraw_Software_Installation&oldid=3766(Remove the current AxiDraw software first.)
Alternately, hand-modify your Inkscape preferences file to use that version of python 3.7 that you have on your computer:
https://wiki.inkscape.org/wiki/index.php/Extension_Interpreters#Selecting_a_specific_interpreter_version_.28via_preferences_file.29Great; that’s progress. I’d suggest tinkering with the apt-get method instead, so that you’ll have the best chance of avoiding further permissions issues.
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