I have been trying to move from this version for a while, however all attempts have failed. The steps I am following:
sudo apt-get remove r-base r-base-dev sudo add-apt-repository 'deb bionic-cran35/' output:
Err:13 bionic Release 404 Not Found [IP: 91.189.95.83 80] after:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9 output:
--recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9 gpg: clave 51716619E084DAB9: "Michael Rutter <>" sin cambios gpg: Cantidad total procesada: 1 gpg: sin cambios: 1 after:
sudo apt update output:
Err:13 bionic Release 404 Not Found [IP: 91.189.95.83 80] after:
sudo apt install r-base r-base-core r-recommended output:
r-recommended : Depende: r-cran-boot (>= 1.2.19) pero no va a instalarse Depende: r-cran-cluster (>= 1.9.6-2) pero no va a instalarse Depende: r-cran-foreign (>= 0.7-2) pero no va a instalarse Depende: r-cran-mgcv (>= 1.1.5) pero no va a instalarse Depende: r-cran-rpart (>= 3.1.20) pero no va a instalarse Depende: r-cran-survival (>= 2.13.2-1) pero no va a instalarse Depende: r-cran-mass pero no va a instalarse Depende: r-cran-class pero no va a instalarse Depende: r-cran-nnet pero no va a instalarse Depende: r-cran-codetools pero no va a instalarse Depende: r-cran-matrix pero no va a instalarse 1 Answer
You have to remove problematic PPA (it does no publish packages for 18.04 LTS - bionic) first with:
sudo add-apt-repository -r ppa:grass/grass-stable and then update your package lists
sudo apt-get update and install new updates with their dependencies by
sudo apt-get dist-upgrade You have added R 3.5 repository (see bionic-cran35 in its URL), instead of needed R 4.0 (bionic-cran40). You have to remove wrong repository with
sudo add-apt-repository -r 'deb bionic-cran35/' and then add correct one:
sudo add-apt-repository 'deb bionic-cran40/' sudo apt-get dist-upgrade sudo apt-get install r-base r-base-core r-recommended 
