I made the SD card image, Bionic Beaver 20200103, and booted to the SD card.
The results were a pink tinted screen and like you, USB did not seem to work.
I recall reading that some eMMC installed Android versions are not compatible with some Linux kernels. My VIM3 had the latest Android Pie on the eMMC.
I erased the eMMC and tried the card again. Screen is properly tinted. Also using a wired KB and mouse, connected to a four-port USB hub connected to the VIM3, I was able to login. All seems to be working as expected. I was able to pair my phone over Bluetooth. Connected to my WiFi router. LAN working at good speeds.
While I have done no further testing, 20200103 seems OK for the short time I have spent on it.
Running Linux from SD card works OK, but Linux on eMMC will probably be faster overall.
Searching these forums produces some others with Tensorflow install issues, such as here. Searching the term Tensorflow brings up several topics, may be something useful can be found.
Wanted to add that Khadas Docs is ever expanding. New information is added often. It has come a very long way since the early days. I expect that will continue.
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