Remote desktop when SBC booted without screen

[Mako]

Hello everyone !

I'm facing a hard issue that I still cannot solve. On my Raspberry, on Raspberry Os, to be able to use Rustdesk (https://github.com/rustdesk/rustdesk, an open source Teamviewer ) I needed to add some tweaks to the /boot/config.txt file:
hdmi_force_hotplug=1 (See doc)
hdmi_group=2 (See doc)

 

Now, I'm trying to replicate these behaviours on Armbian for Opi zero 3 (but it could probably work for all Allwinner cpus if a solution is found)

When looking on the Armbian documentation for Sunxi, I've found this (See doc) :
 

For example to always use the hdmi connector, even if no cable is inserted, using edid info when available and otherwise initalizing it at 1024x768@60Hz, use: 
setenv video-mode sunxi:1024x768-24@60,monitor=dvi,hpd=0,edid=0

 

That really looks like what I want to achieve, but when adding this line to the /boot/boot.cmd file, re-building it using:

mkimage -C none -A arm -T script -d /boot/boot.cmd /boot/boot.scr

 

and after rebooting, I still can't connect to my distant Opi.

Am I missing something? Did someone has faced something similar?

 

Thanks for any help !

 

 

 

[Werner]

moved