VIM3_Pie_V200319 weird HDMI output

Hi, trying to use my Khadas VIM3 for NPU dev, the stock Android image seemed corrupted so I flashed the latest version found at

However the HDMI output is still weird on a HDMI 7" 1024x600 screen with non standard touch input (non HDI) from WaveShare (driver for RPi

So the display is scrambled on the VIM3, yet the screen works well on the PC.


Any idea ?