Tones

Hey Community! I installed Armbian Jessie without any problem to SD Card. HDMI was the default screen output, and I changed to VGA with the help of this topic: http://forum.armbian.com/index.php/topic/445-debian-images-cubietruck-vga-output-problem/ The next boot went fine, VGA works. But, after the system upgrade-update, after the reboot the screen is HDMI again. I checked the card's file system with NAND ubuntu, the output order (the 4 row) is 4-4-4-4. So, I can't understand. The VGA monitor is fine, working in the next few phase before the kernel starts, but after that: just blinking. If I connect the Samsung HDTV, the desktop present there.... Thanks for the advices! Antal