After fixing the baudrate, M8N module can not be detected.

[YANG-DEMIN]

1. GPS Baudrate setting
   If I set the param "SER_GPS1_BAUD" as "Auto", my M8N receiver can be detected and its protocol is UBX, baudrate is 115200, at the same time, the "GPS_RAM_INT" message showed in MAVLINK message.
   But, when I change the "SER_GPS1_BAUD" to "115200", my receiver can not be detected(or half detected), the "GPS_RAM_INT" message did not show in MAVLINK message.
   They are shown below.

2. What's more, my UWB module output as NEMA@115200, and meet the same problem as case 2.

I want to know what wrong with it, thank you very much!