Here are some general suggestions that often help when one channel is not recognized:
- Make sure you don't have any other joysticks/controllers connected, that might cause a conflict.
- If connecting via USB, make sure you uninstall vJoy and Smartpropoplus if you have them. Their driver messes with things when connecting via USB.
- Make sure you have "Heli" selected as model type on your radio. ("Plane" generally doesn't work very well).
- If you are using a USB dongle - check if there's a switch on the dongle where you can select different modes.
- Perhaps you can remap the output channels (in the menu of the transmitter) so that it sends to another channel.
As for your mic port problem, it sounds like there is some kind of dead zone activated. First of all, make sure that dead zone is turned off in the main menu of Freerider. Second, check if you can turn off the dead zone in the software that you use.
Btw, some Taranis users on linux are experiencing that there is always a dead zone by default. It needs to be turned off by running:
" $ jscal -c /dev/input/js0 "
( source: https://github.com/opentx/open... )