I have a vim pro, it boot perfectly on ubuntu, but with all android firmware I only get a black screen and my display briefly shows "No signal" before to go to standby..
So I see the vim logo and after about 10 seconds, the screen go to standby. If I wait for about 1 minute, I can see the vim on the network so it boot but have no screen.
Of course Adb is unavailable as I can't select "USB debugging " as I don't have anything on the screen.
When I create a burning card, all the upgrade progress is correctly displayed on my screen.
I tried on 2 Sony tv and a hdmi ips panel. Tried both latest android 6 and 7...
Do anyone have an idea? Is is possible to enable adb debugging strait from the firmware at build time?