I have Banana Pi (BPi-M1) with Allwinner A20 SoC, this one
(ARM Cortex-A7 dual-core, 1GHz, Mali400MP2 GPU)
But in this manual, here, about starting on x86 architecture there are note:
We only generate and certify images which work on a 64 bit system. If you require 32 bit, You can generate the image using
ubuntu-device-flash
.
But I couldn't find manual how to generate this image.