FrancescoT

Great job. I've built Armbian_5.77_Orangepi3_Ubuntu_bionic_dev_5.0.1_desktop, and I finally can see the potential of this SoC.
It now outperforms all my other quad-core SBC's. Thermals are ok, even without a fan it's very workable.
It does seem that the heat can't dissipate well into the heatsink, I think this SoC is a bit too small. With a short 7z benchmark is quickly goes up to 75°C. But the heatsink doesn't warm up. When done it immediatly goes back to 45°C. So it can't deliver the heat into the heatsink.

Maximum display resolution is 1024x768. On-board wifi doesn't work, but my dongles worked immediatly. Also no hdmi sound.
Just for fun I tried Youtube. And it plays great in 1080p with Firefox. Don't know if this would be the same with a true 1080p display resolution.

I'm very happy seeing a better performing image for it. What a difference with the images from Orange Pi.
The SoC could use a metal casing to better dissipate the heat, otherwise it looks good. Thank you.

Brilliant idea!! 

I attached an arduino to the OPi3 serial port with an old cdrom audio connector (where I moved a pin in order to have three adjacent pins connected) and three male-male pin cables, now I can see the output 

I installed Ubuntu and was able to upgrade to 18.04.2 LTS keeping the 3.10.65 kernel
Basically you have to replace the mirrors provided in /etc/apt/sources.list and resize the /boot partition (added another 50MB: originally it's only 50MB and the script "do-release-upgrade" fails), did the resizing on my main computer.
I can mount a USB3 pen drive but the I/O performance are appalling. Gigabit ethernet works fine.
I agree about overheating, I'll have to mount a heat sink...

Oh my, I didn't notice. It's even worse than you describe! I left for half an hour the OPi3 idling and its load average is around 7, with cfinteractive taking 100% of the CPU...
I managed to compile the kernel from https://github.com/orangepi-xunlong/OrangePiH6_Linux4.9 but now I have to figure out how to convert the image to u-boot format (this u-boot thing is new to me).

@krachlatte did you receive your board? I'd like to help with testing but the instruction here: https://github.com/krachlatte/armbian-orangepi3/blob/master/README.md are not clear to me.

I'll try with the latest image from https://github.com/krachlatte/armbian-orangepi3/releases/