On my cubietruck I have tried the Armbian_5.75_Cubietruck_Debian_stretch_next_4.19.20. For me it looks that u-boot loads the files, but the kernel will/can not start. Attached the output from the console.
Rarly I get some additional output on the console like "Uncompressing Linux... done, booting the kernel." but nothing happens, or some wild output from wrong instructions which leads to a reset.
I have also tried "Armbian_5.59_Cubietruck_Ubuntu_xenial_default_3.4.113_desktop" to exclude some mainline / legacy kernel issues. But no luck.
With some older versions (e.g. 5.20) I have no luck also.
From my feeling there is a basic thing, may be:
timing (RAM, SD-card)
RTC / empty batterie
problem with the NAND in the background / or the bootloader from there interferes
missing some requirements
After reading dozens of topics from the forum and spending a lot of hours for a search in the web, a have no idea how to go further to solve this issue.
Any hints what I can check / do?
I am able to boot an old armbian (legacy kernel) from NAND. There , I can mount the SD-card and read and write.
I am able to boot an linaro (older) from SD-card without problems. I have seen that the clock is not up to date. The time started an bootup.
How I have tested:
To the cubietruck I have only connected SD-card, HDMI, network, power supply and UART0 console with putty.
I have burned image with win32imager (version 1.0) and verified.
I have used different SD-cards (brands, sizes, classes).
I have used different power supplies on the power connector => same result.