Just to clarify my previous post. These packages can't be installed if you do a fresh install of Ubuntu 14.04.2. If you install Ubuntu 14.04 (the first iso that came out of this release) you can install the packages and steam as well. I just did this.
These are the packages I have installed even after a dist-upgrade and subsequent change of version to 14.04.2 in my /etc/issue ii libgl1-mesa-dri:amd64 10.1.3-0ubuntu0.3 amd64 free implementation of the OpenGL API -- DRI modules ii libgl1-mesa-dri:i386 10.1.3-0ubuntu0.3 i386 free implementation of the OpenGL API -- DRI modules ii libgl1-mesa-glx:amd64 10.1.3-0ubuntu0.3 amd64 free implementation of the OpenGL API -- GLX runtime ii libgl1-mesa-glx:i386 10.1.3-0ubuntu0.3 i386 free implementation of the OpenGL API -- GLX runtime -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1424263 Title: Broken dependencies To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1424263/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp