I was trying to run Ubuntu/Debian on my GT King Pro Rev B for a while, at last I succeed about it.
I did not try mainline kernel, because we don't have an appropriate dtb file for mainline kernel. We can use Armbian's dtb file but it seems problematic.
So using 4.9 kernel with framebuffer hardware acceleration is a good option for us.
You wont get hardware acceleration for XFree because there are no drivers for it yet ( it is in development )
But CPU performance is enough to play HD youtube videos.
You can run kodi which prompts you to switch to FBDevice and it works great.
Since dtb is same it must work for GT King version too.
Setup Instractions are as below:
1- Download image from Khadas for VIM3 VIM3_Ubuntu-xfce-bionic_Linux-4.9_arm64_SD-USB_V20191231.7z
2- Extract downloaded image file.
3- Flash image with Etcher to an appropriate SD/USB drive ( faster drives give better performance )
4- Extract dtb file from CoreELEC latest Nightly build or use attached one.
5- Copy dtb file to root of boot partition and rename it as dtb.img like CoreELEC installation. Firstly you must delete the old dtb.img which was for VIM3.
6- Plug your USB/SD drive and Reboot tv box with "Switch os" option from Android.
7- Default password for "root" and "khadas" is khadas dont forget to change it..
8- Enjoy it.
Regards,
Note: I released an updated version Debian 10 & Ubuntu 20.04 please use it.
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