How to install Steam on Ubuntu 20.04 Focal Fossa Linux - LinuxConfig.org

The objective is to guide reader through the installation of Steam on Ubuntu 20.04 Focal Fossa Linux using standard Ubuntu repository as well as to perform a manual installation using the official Steam package.
This is a companion discussion topic for the original entry at https://linuxconfig.org/how-to-install-steam-on-ubuntu-20-04-focal-fossa-linux

It looks like i am not able to install steam on an upgrade 20.04 from 18.04.

The following packages have unmet dependencies:
libgcc-s1 : Breaks: libgcc-s1:i386 (!= 10-20200416-0ubuntu1~18.04) but 10-20200411-0ubuntu1 is to be installed
libgcc-s1:i386 : Depends: gcc-10-base:i386 (= 10-20200411-0ubuntu1) but it is not going to be installed
Breaks: libgcc-s1 (!= 10-20200411-0ubuntu1) but 10-20200416-0ubuntu1~18.04 is to be installed
libgtk-3-0 : Depends: adwaita-icon-theme but it is not going to be installed
Depends: librest-0.7-0 (>= 0.7) but it is not going to be installed
Recommends: libgtk-3-bin
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

this was started when I was not able to install libgl1:i386 which is the requirement for libgl1-mesa-glx:i386

anyone has resolved this issue or found similar problem?

No luck…

sudo add-apt-repository multiverse
#‘multiverse’ distribution component is already enabled for all sources.
sudo apt update
#Reading package lists… Done
#Building dependency tree
#Reading state information… Done
#379 packages can be upgraded. Run ‘apt list --upgradable’ to see them.
sudo apt install steam
#Reading package lists… Done
#Building dependency tree
#Reading state information… Done
#Package steam is not available, but is referred to by another package.
#This may mean that the package is missing, has been obsoleted, or
#is only available from another source
#However the following packages replace it:
#steam-devices

#E: Package ‘steam’ has no installation candidate

Hi A_B,

Welcome to our forums.

I just checked on a recently updated Ubuntu 20.04, and steam installs without problem with the commands mentioned. So you may want to try cleaning your apt cache:

$ sudo apt clean

And try again. Eventually it should indeed install the steam-devices package and dependencies, but for me the install command resolved it without question.

My bad. I blindly tried your suggestions with 18.04.5 LTS.