My main thoughts are:
- Are both the cameras appearing consistently on the Video page in the BlueOS web interface? If so you may be seeing the issue recently brought up here.
- If it’s a port issue it could be one of:
- the cameras weren’t both plugged in to the same locations when BlueOS was first started, so they’re being detected but only one port is automatically being streamed
- the Raspberry Pi is struggling to provide power to both cameras, either because
- it has insufficient power itself → possibly try a power supply with a higher current capacity
- it can’t provide enough to the USB ports → possibly try using an externally powered USB hub (may also be a valid solution to the previous option)
- one or more of your RPi ports are damaged → may need to repair it or use a different RPi
- You could also potentially be facing signal issues from one or more overly long unshielded USB cables