Willy G

Hi, sorry for my english. I have an orange pi plus 2 and i try to turn it's wifi module on ap mode. I install hostapd et and set config lines in /etc/network/interfaces. After reboot the OPI can't finish the starting. I mean it's boot and one second after login line appear, the screen display lot of lines and it reboot again. What can be the problem? Any help? PS: The system is Ubuntu server installing on EMMC. My power supplie is 5V - 2,5 A (So i think it's not a power issu).