I've installed ubuntu classic server 16.04 (Rasberry Pi 3 edition) found here https://ubuntu-pi-flavour-maker.org/download/ on Rasbperry Pi 3 b and everything is working as expected when I ssh into it. I would like to use a desktop "stylish" setup for configuring the network and security settings.
After connecting the monitor and powering up the raspy this message shows up on the screen:
Net: Net Initialization Skipped No ethernet found. USB0: Core Release: 2.80a scanning bus 0 for devices…
Could someone open up that message a little bit, what does it mean? I also get a little square icon with rainbow colors in the right upper corner
I have uncommented the the following lines in config.txt:
hdmi_force_hotplug=1 hdmi_group=1 config_hdmi_boost=4 hdmi_safe=1 ← the last thing I tried
I've also tried config_hdmi_boost=9
I'm using a mobile charger with an output of 5 V and 2.1 A to power up the raspy, but I'm not sure if it's sufficient enough if you want the raspy to display an image on the monitor.
This site https://howtoraspberrypi.com/raspberry-pi-hdmi-not-working/ recommended a charger with an output of 5 V and 3 A.