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* * * FIX FOUND * * * FIX FOUND * * *
A solution that WORKS was suggest to me on the Octoprint forum. sudo systemctl disable brltty
Another FIX I had already used is found at: usbfs: interface 0 claimed by ch34x while 'brltty' sets config #1 · Issue #18 · juliagoda/CH341SER · GitHub