EDIT: HD6570 DVI still has the problem.
HD6570 HDMI works.
Unfortunately I still have the issue with the Sam460ex onboard ethernet not connecting.
Onboard ethernet only works for me when I use DHCP. It doesn't work with a static IP.
With Os4 I can use a static IP, so I know it's not a wrong setting on my system.
I forgot to report this bug when I installed morphos 3.9.