Error when booting on all Operating Systems

[w_t]

Hello,
I'm trying to install ubuntu desktop on Raspberry Pi 2 Model B,
I follow the instructions from here:

https://wiki.ubuntu.com/ARM/RaspberryPi

When I start the Raspberry, in the monitor I have a multicolored square and everything is fixed, nothing happens.
The usual thing I do with Ubuntu Mate 16.04.2,
with Ubuntu Core 16,
with Ubuntu Server preinstalled 16.04.3
with Xubuntu 16.04.2 Desktop

Only Raspbian Server works, just do not connect to apt-get update repositories and install phyton packages, I saw an error online.

Anyway, I'd like to try a Desktop system.

Do you think I'm blocking everything?

[fruitoftheloom]

Hello,
I'm trying to install ubuntu desktop on Raspberry Pi 2 Model B,
I follow the instructions from here:

https://wiki.ubuntu.com/ARM/RaspberryPi

When I start the Raspberry, in the monitor I have a multicolored square and everything is fixed, nothing happens.
The usual thing I do with Ubuntu Mate 16.04.2,
with Ubuntu Core 16,
with Ubuntu Server preinstalled 16.04.3
with Xubuntu 16.04.2 Desktop

Only Raspbian Server works, just do not connect to apt-get update repositories and install phyton packages, I saw an error online.

Anyway, I'd like to try a Desktop system.

Do you think I'm blocking everything?

Try a newer release ie Ubuntu-Mate:

https://ubuntu-pi-flavour-maker.org/


Or why not use the de-facto RPF Raspbian Stretch with Desktop:

https://www.raspberrypi.org/downloads/raspbian/