CAT on Linux OS

Bill
 

I run Linux 19.1 to the uBITX V5 to control WSJT-X, JS8, and Fidigi. The audio CODEC works but I am unable to get CAT control using Yaesu 817.
I tried USB0, and other ttySx settings and find NO responce.  The Terminal detects the UART 340 OK when I (lsusb).  Tried the same setting as for my Win 7 which works fine - being - 8bit, 1 stop, 38400 baud.
Any help would be appreciated 
Bill K9JUI

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