Can't Install R 4.X on Ubuntu 20.04

Question

I trying to update R on my Ubuntu 20.04 (new updated from 16.04).

So I delete the previous version of R by :

sudo apt-get purge r-base* r-recommended r-cran-*    
sudo apt autoremove

After, I update my /etc/apt/sources.list by adding the good repository

deb https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/

And the correct key :

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9

But, I obtain an error during the update of sources.list :

sudo apt-get update
Ign :10 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ InRelease
Err :11 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Release
  Could not wait for server fd - select (11: Ressource temporairement non disponible) [IP : xxx.xxx.xxx.xxx xxxx]
Lecture des listes de paquets... Fait
W: Le fichier configuré « partener/source/Sources » ne sera pas pris en compte car le dépôt « http://archive.canonical.com/ubuntu focal InRelease » ne dispose pas de la source « partener » (erreur de saisie dans sources.list ?)
E: Le dépôt https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Release n'a pas de fichier Release.

At work, I am behind a proxy. So, the proxy parameters are specified on the network parameters in systeme parameters but also for apt. (80proxy file in /etc/apt/apt.conf.d/)

With this configuration, only the R 3.6 is accessible :

apt-cache policy r-base r-base-core r-base-dev r-recommended
r-base:
  Installé : (aucun)
  Candidat : 3.6.3-2
 Table de version :
     3.6.3-2 500
        500 http://fr.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        500 http://fr.archive.ubuntu.com/ubuntu focal/universe i386 Packages
r-base-core:
  Installé : (aucun)
  Candidat : 3.6.3-2
 Table de version :
     3.6.3-2 500
        500 http://fr.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
r-base-dev:
  Installé : (aucun)
  Candidat : 3.6.3-2
 Table de version :
     3.6.3-2 500
        500 http://fr.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        500 http://fr.archive.ubuntu.com/ubuntu focal/universe i386 Packages
r-recommended:
  Installé : (aucun)
  Candidat : 3.6.3-2
 Table de version :
     3.6.3-2 500
        500 http://fr.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        500 http://fr.archive.ubuntu.com/ubuntu focal/universe i386 Packages

I have got a laptop with also Ubuntu 20.04 updated and the same sources.list and I meet no error from home network.

I suspect that the error is due to proxy parameters but I not sure. Could you help to configure and install successfully the last version of R ?

Thanks a lot for your help.

My sources.list :

 more /etc/apt/sources.list
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://fr.archive.ubuntu.com/ubuntu/ focal main restricted
deb-src http://fr.archive.ubuntu.com/ubuntu/ focal main restricted
Major bug fix updates produced after the final release of the
distribution.
deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates main restricted
deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates main restricted
N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
team. Also, please note that software in universe WILL NOT receive any
review or updates from the Ubuntu security team.
deb http://fr.archive.ubuntu.com/ubuntu/ focal universe
deb-src http://fr.archive.ubuntu.com/ubuntu/ focal universe
deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates universe
deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates universe
N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
team, and may not be under a free licence. Please satisfy yourself as to
your rights to use the software. Also, please note that software in
multiverse WILL NOT receive any review or updates from the Ubuntu
security team.
deb http://fr.archive.ubuntu.com/ubuntu/ focal multiverse
deb-src http://fr.archive.ubuntu.com/ubuntu/ focal multiverse
deb http://fr.archive.ubuntu.com/ubuntu/ focal-updates multiverse
deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-updates multiverse
N.B. software from this repository may not have been tested as
extensively as that contained in the main release, although it includes
newer versions of some applications which may provide useful features.
Also, please note that software in backports WILL NOT receive any review
or updates from the Ubuntu security team.
deb http://fr.archive.ubuntu.com/ubuntu/ focal-backports main restricted univers
e multiverse
deb-src http://fr.archive.ubuntu.com/ubuntu/ focal-backports main restricted uni
verse multiverse
deb http://security.ubuntu.com/ubuntu focal-security main restricted
deb-src http://security.ubuntu.com/ubuntu focal-security main restricted
deb http://security.ubuntu.com/ubuntu focal-security universe
deb-src http://security.ubuntu.com/ubuntu focal-security universe
deb http://security.ubuntu.com/ubuntu focal-security multiverse
deb-src http://security.ubuntu.com/ubuntu focal-security multiverse
Uncomment the following two lines to add software from Canonical's
'partner' repository.
This software is not part of Ubuntu, but is offered by Canonical and the
respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu focal partner
deb-src http://archive.canonical.com/ubuntu focal partner
The Comprehensive R Archive Network
deb https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/
deb-src https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/

Ubuntu 20.04 is 1.5 years old. It runs software that is also 1.5 years old. Ubuntu 21.04 (and 21.10) include newer R 4.0.4 packages. — user535733, Oct 12 '21 at 13:36
Yes I am totally agree with you but Ubuntu 20.04 is the latest LTS version available now. ( the next one will be in 2022 ) — LittleYoelii, Oct 12 '21 at 14:08
It will be difficult for us to help you with a third-party server that does not work correctly. Maybe wait a day to see if the issue gets resolved on the side of the maintainers. — vanadium, Oct 12 '21 at 14:20

score 0 · Answer 1 · answered Oct 13 '21 at 08:10

After contacting the IT service, they ask to me to test another address for the proxy parameter but I obtain a new error.

sudo apt-get update
Ign :1 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ InRelease
Atteint :2 http://fr.archive.ubuntu.com/ubuntu focal InRelease                                                                            
Atteint :3 http://fr.archive.ubuntu.com/ubuntu focal-updates InRelease                                                                                   
Err :4 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Release                                                                                
  Could not handshake: An unexpected TLS packet was received. [IP : 10.3.0.11 3128]
Atteint :5 http://fr.archive.ubuntu.com/ubuntu focal-backports InRelease                                                                                 
Atteint :6 http://repository.spotify.com stable InRelease                                                                                 
Atteint :7 http://ppa.launchpad.net/c2d4u.team/c2d4u4.0+/ubuntu focal InRelease                         
Réception de :8 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]
Lecture des listes de paquets... Fait
E: Le dépôt https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Release n'a pas de fichier Release.
N: Les mises à jour depuis un tel dépôt ne peuvent s'effectuer de manière sécurisée, et sont donc désactivées par défaut.
N: Voir les pages de manuel d'apt-secure(8) pour la création des dépôts et les détails de configuration d'un utilisateur.

With this new error, I found this previous post

apt update: Could not handshake: An unexpected TLS packet was received

So I try to delete the "s" in the address of https_proxy and.... it's WORKS !!!

In addition, the only proxy parameters take account in the apt-get update command are in the /etc/apt/apt.conf file.

more apt.conf
Acquire::http::proxy "http://myaddress.XXX.fr:myport/";
Acquire::https::proxy "http://myaddress.XXX.fr:myport/";
Acquire::ftp::proxy "ftp://myaddress.XXX.fr:myport/";

This solution works also with the initial proxy parameters.

Can't Install R 4.X on Ubuntu 20.04

Major bug fix updates produced after the final release of the

distribution.

N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu

team. Also, please note that software in universe WILL NOT receive any

review or updates from the Ubuntu security team.

N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu

team, and may not be under a free licence. Please satisfy yourself as to

your rights to use the software. Also, please note that software in

multiverse WILL NOT receive any review or updates from the Ubuntu

security team.

N.B. software from this repository may not have been tested as

extensively as that contained in the main release, although it includes

newer versions of some applications which may provide useful features.

Also, please note that software in backports WILL NOT receive any review

or updates from the Ubuntu security team.

Uncomment the following two lines to add software from Canonical's

'partner' repository.

This software is not part of Ubuntu, but is offered by Canonical and the

respective vendors as a service to Ubuntu users.

The Comprehensive R Archive Network

deb-src https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/

1 Answers1