AIO-3399J_V12 vs. V1.3

peksuj

Hi,

I have 16 pcs v12 models and new I ordered 1 pcs more, I get v1.3 board. I get dual-LVDS work on v12 board (using a LOT of time to research material how to configure kernel to work with dual-LVDS). Now I update v1.3 board using same kernel wich I use v12. Display in v1.3 board is now only grey. HDMI port work OK. I try newest (Linux) kernel with Ubuntu 16 and 18.

What is changed in this new v1.3 model and what I must do in (Linux) kernel config? To get dual-LVDS work like in v12 board.

Thanks,
Pekka

peksuj

Hi,

I found the problem. LVDS port VCC pins give 0 volt. I test power selection connector and LVDS VCC pins connection and there wasn't connection of these pins. I put jumper wire from 3v3 port to LVDS port VCC and now display works like charm. Is this designing bug or manufacture problem?

But MIC port doesn't work yet... I need to mesure all MIC connections on PCB to make sure that there has no problems.


Pekka

CarletonBechte

Hello! @Merge Fruit The fact that you have temporarily connected the VCC pin of the LVDS to the 3.3V source is a temporary solution, helping the screen to work, but this is not a long-term solution and can lead to other problems with the stability of the system.