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I have a raspberry pi 4, 4GB RAM and have installed Ubuntu 20.04 LTS server edition.As I wanted to make things easy, I installed kubuntu - desktop using:

apt install kubuntu-desktop  

Then I installed tightvnc as I don't have any HDMI cable with me right now.But when I connect VNC, a black screen comes.I searched this on google and found that I have to edit grub and remove "textmode" there.I tried other DE's but it's the same.

I know that Raspberry pi 4 doesn’t support Grub, so how can I install a lightweight Desktop Environment?

*Don't tell me to install ubuntu again with GUI.I don’t want to get into the hassle of installing server components on ubuntu desktop.

  • To make things easy, use Raspbian. – Ingo May 19 at 11:49
  • Thanks for the advice.But I am too familiar with Ubuntu! – null_override May 19 at 15:32
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i installed ubuntu-desktop with xserver-xorg and xinit then lightdm

sudo apt-get install ubuntu-desktop lightdm xserver-xorg xinit qv4l2 mumble mumble-server freetuxtv pavucontrol pithos ubuntu-restricted-extras gnome-screenshot took a while

on my pi4

it works great

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  • I will try and let you know ☺ – null_override May 30 at 7:48
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I would try adding the following to /boot/firmware/syscfg.txt (or usercfg.txt):

dtoverlay=vc4-fkms-v3d

Ubuntu 20.04 won't boot properly to the desktop by default on tty1. This will allow the boot sequence to complete, and it may fix your issue.

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