I'm trying to install Steam on the laptop my son is getting for christmas (running Ubuntu 14.04.3 LTS), however when I try to run Steam for the first time (via the "Steam" desktop icon it creates), a Terminal window appears and I am told:
Steam needs to install these additional packages:
libgl1-mesa-dri:i386, libgl1-mesa-glx:i386, libc6:i386
Entering the password does its thing, then I am told:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
libgl1-mesa-glx:i386 : Depends: libglapi-mesa:i386 (= 10.1.3-0ubuntu0.5)
unity-control-center : Depends: libcheese-gtk23 (>= 3.4.0) but it is not going to be installed
Depends: libcheese7 (>= 3.0.1) but it is not going to be installed
N: Ignoring file 'steam.list.disable' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'google-chrome.list.disable' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'webupd8team-java-trusty.list.disable' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'steam.list.disable' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'google-chrome.list.disable' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'webupd8team-java-trusty.list.disable' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
I press "Enter" and am told in a pop-up dialog box:
You are missing the following 32-bit libraries, and Steam may not run:
libGL.so.1
I have followed the answer found here, however it had no effect...
Any help would be appreciated.