1.25. Some cameras don’t start streaming image when I connect multiple (for instance, 8) cameras. This happens occasionally#

It can be relaxed by activating the cameras sequentially. Please try with GStreamer command like below (this is the case of x8 C1 camera connection).

#! /bin/bash

for i in {0..7}
do
	gst-launch-1.0\
		v4l2src io-mode=0 device=/dev/video${i} do-timestamp=true ! 'video/x-raw, width=1920, height=1280, framerate=30/1, format=UYVY' ! videoscale ! xvimagesink sync=false &
sleep 2
done