To avoid using two ANT+ dongle, you need to emulate the ANT+ dongle seen by Zwift. Yes, it is possible to run Zwift on Linux, I run Zwift on Linux with my newer Wahoo Kickr Core using wine ( ). I would also like to use FortiusAnt to run the Fortius with Zwift, without having to use two ANT+ dongles. I am now looking at their documentation to improve the GoldenCheetah Fortius driver and add calibration. However, TotalReverse went much further analyzing the Fortius. I documented my findings and wrote a Linux driver with the help of Petr Blaha. I traced the USB communication between the Tacx software and the unit to understand the protocol. The head unit is solid blue, motor control T1946.50, brake motor T1941. I bought the 'Tacx Fortius' with steering around 2008.
