Mission Impossible PI2 Jessie & Razberry Topic is solved

[thaui]

I am not really new to Domoticz and I try to build up a brand new system. Before I was using PI B+ & Wheezy. Now I am preparing the SD card like described in the Domoticz Wiki. I read all the remarks concerning ttyAMA0 and ttyUSB20. I tried everything to get the connection with the razberry established. It works from time to time changing from ttyAMA0 to ttyUSB20. But after rebooting the unit the controller is lost again and the "setup" stays red. What I am doing wrong? Any help is welcome.

[Egregius]

Search for persisten usb

[thaui]

After some further search this link has helped a lot
http://raspberrypi.stackexchange.com/qu ... ian-jessie
Running this command
dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait
and Enabling uart in /boot/config.txt
enable_uart=1
the ttyAMA0 serial port is running like expected.