Install R and Rstudio in Lubuntu 18.04

Installing R and Rstudio was not so easy in a fresh Lubuntu 18.04 install. Here is the solution :

 First open the terminal and enter:

 sudo apt update
sudo apt upgrade

 Edit the file  /etc/apt/sources.list

 and add:
deb https://cloud.r-project.org/bin/linux/ubuntu bionic-cran35/

 Enter these commands also in terminal:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
sudo apt update
sudo apt upgrade

sudo apt install r-base r-base-dev

Load this file:
https://download1.rstudio.org/desktop/bionic/amd64/rstudio-1.2.1335-amd64.deb

 (or any newer)

And install it

In terminal, enter:
sudo apt install at-spi2-core
sudo apt install build-essential
sudo apt install qtcreator
sudo apt install qt5-default

 Restart using:
sudo reboot

 And run Rstudio with:
export QT_XCB_FORCE_SOFTWARE_OPENGL=1
export QT_STYLE_OVERRIDE=""
/usr/lib/rstudio/bin/rstudio

 it forces to not use the xserver-xorg-video-nouveau video driver

 Or add these lines in 
sudo vi /etc/environment

 QT_XCB_FORCE_SOFTWARE_OPENGL=1
QT_STYLE_OVERRIDE=""

And now you can run Rstudio !


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