If anybody is bored with SD card partitioning, manual flashing boot loader on
h6/h616, rk3399/3566/3568, s905/s912/sm1/g12 SBC/TVboxes - maybe https://github.com/warpme/miniarch can be helpful?
Never get bored . we all different + i sure it be a great help for some/new usr. I wish you all best on your project. for share this interesting project on forum.
Go here to see how armbian installs some packages for 3D acceleration.
In order to enable 3D acceleration:
sudo add-apt-repository ppa:liujianfeng1994/panfork-mesa
sudo add-apt-repository ppa:liujianfeng1994/rockchip-multimedia
sudo apt update
sudo apt dist-upgrade
Oddly I found these miniarch images and THEN found EOS because of them, not the other way around. With a bit of help from warpme I was able to get this going on my H6 based T95 max STB, and a simple DD to the internal mmc storage got me booting MiniArch from trhe device.
Originally, I was going to set this up as an octoprint server, as I have a persistent USB issue with my PI, but I found that the box had even worse USB issues talking to my printer, so plan B is to make this into a small portable station for my ham radio hobby (addiction). Currently building wsjtx now!
I just verified on my TX6s and it is fully functional.
This means for me issue is probably just in device-tree for your tvbox.
May you try with different dt files?
Currently you have following dt to try:
I tried with sun50i-h616-x96-mate.dtb first as my box cover says x96 mate, was not able to boot at all.
So reverted back to tanix tx6s , even orange pi one also did not work.
Will try t95 tomorrow .
Tried T95 did not boot,
Might be it is clone of tx6s by some china vendor packaged in x96 box
There is also a issue with this box, even at the time of Android it was there
It works perfectly fine with my office screen, which is old 32inch LG
But with other screens be it same size 32inch from Samsung or 24inch LG or 43inch by LG, Screens goes blank every 2nd second and comes back on . It is like loosing HDMI signals every 2sec.
It was with Android too. Might be due to cheap China clone.
For my project I use matchbox / openbox as DE,
Will flash tx6s with xfce DE on Monday to get debug logs.
Thanks . Manage to install in TX6s after many attempts. Now stuck with installing home assistant. Got error /var/lib/hass/ folder access denied. If you got step to install home assistant on EnOs pls help.
Just in case some one interested to use their old tvbox as linux machine. This is the only img that work with h616 and author still active updates img file.
. we all different + i sure it be a great help for some/new usr. I wish you all best on your project. 
for share this interesting project on forum. 
. Manage to install in TX6s after many attempts. Now stuck with installing home assistant. Got error /var/lib/hass/ folder access denied. If you got step to install home assistant on EnOs pls help.