On Thu, Feb 04, 2016 at 11:10:33PM +0000, Howard Lum (holum) wrote: > Hi Greg, > > We have two Digi Edgeport devices. I will call them A and B. If I only > have A then ttyUSB0-7 correspond to ports 1-8 on A respectively. The > same applies if I only have B. When I have A and B, then I get > something like this: > > ttyUSB0 - Unit B port 3 > ttyUSB1 - Unit B port 4 > ttyUSB2 - Unit B port 5 > ttyUSB3 - Unit B port 6 > ttyUSB4 - Unit B port 1 > ttyUSB5 - Unit B port 2 > ttyUSB6 - Unit A port 3 > ttyUSB7 - Unit A port 4 > ttyUSB8 - Unit A port 1 > ttyUSB9 - Unit A port 2 > ttyUSB10 - Unit B port 7 > ttyUSB11 - Unit B port 8 > ttyUSB12 - Unit A port 5 > ttyUSB13 - Unit A port 6 > ttyUSB14 - Unit A port 7 > ttyUSB15 - Unit A port 8 Makes sense, these devices have an internal hub inside of them, so they enumerate at different rates. Use the /dev/serial/ symlinks to get a "persistant" device name to use instead of /dev/ttyUSB??? as those names will change all the time as you have found out. > I have not contacted Red Hat or CentOS yet. I'd recommend that, that's what you are paying support for :) good luck! greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
