RTK with Pixhawk 6c mini and only GPS2 is connected

General
1

I am trying for building a drone , including Cuav , Pixhawk 6c mini but I am facing a problem, problem is GPS2 is not detected,

We was rtk connect to GPS2 Port and parameter is correct but same problem facing.

Can anyone suggest me for this and any parameters is required pls suggest me

2

Search this forum. Using only GPS2 input needs a special configuration as for the FC that is the First GPS it sees

3

If you upload your parameter file, I can take a look and check whether anything is missing or not configured correctly.
Would you be able to upload it?

4

Just set SERIAL3_PROTOCOL to -1 and configure it as it were connected to GPS1