Problem with multiple pointgrey_camera

edit

I am trying to connect 2 chameleon3 camera using pointgrey_camera_driver. As per help available online I have made following required changes. 1. Increase usbcore memory( /etc/default/grub) 2. modify node file available ( https://github.com/ros-drivers/pointg... ) 3. modify launch file with separate camera ns and nodelet manager 4. increase r_mem and w_mem(/etc/sysctl.conf)

The 2 camera setup work properly sometimes (mainly upon restarting the laptop); it properly runs and publishes image on both topics which can be read by Rviz.

The problem is, once I terminate this program and try to relaunch it; the launch file runs properly but only one camera is able to publish images.

Please help!!!!