MacBook Pro USB/Serial port issue

[Rick (Technical Evangelist)]

Have a read of this:

@LightBurn

There is a common and known issue with the OSX virtual serial port driver locking up, and blocking other drivers. Resetting the Mac (not just sleeping) will unlock the port.

This is a more permanent solution:

superuser.com

How to release/reset serial port FTDI devices - Mac OSX

macos, usb, matlab, ftdi

asked by thkemp on 08:47AM - 17 Oct 16 UTC

OS X and Connecting to an GRBL board

Hi there, New to Lightburn under OS X, but i have been using it during the trial period on a Windows Laptop (Win8.1 - Eleks CNC+Laser, Woodpecker 1.1 controller). I can’t seem to get communication thru USB. Instead of AUTO or a COM port, my choices are 2 Bluetooth connections. I am guessing this is a very specific OS X problem, but if any one has a thought… Cheers