I'm running WSJT-X under Ubuntu 15.10. I have an IC-718, a Donner Digital interface, and a CIV cable. I can get these to work fine under fldigi, but using WSJT-X, CAT works but PTT is just kaput. I have tried many combinations and manually can trigger my TX-relay by raising /dev/ttyS0 using terminal programs... I am really hoping someone can throw me a bone to try with my PTT/RTS/ttyS0!

Thanks!
kc
K9SPY in SATX