I'm trying to install Steam Client on Debian 8 (Jessie) 64-bit because the instructions ask me to (and because I've tried without them and it fails... read on!). In following the instruction I've basically done the following:deb http://http.debian.net/debian/ jessie main contrib non-freedpkg --add-architecture i386aptitude updateaptitude install steamaptitude install libgl1-fglrx-glx:i386That last one was in an attempt to install the 32-bit drivers for my ATI Radeon HD 7800. These are needed because steam is apparently 32-bit and requires 32-bit drivers. The output when I run that command is:user@home:~$ sudo apt-get install libgl1-fglrx-glx:i386Reading package lists... DoneBuilding dependency tree       Reading state information... DonePackage libgl1-fglrx-glx:i386 is not available, but is referred to by another package.This may mean that the package is missing, has been obsoleted, oris only available from another sourceE: Package 'libgl1-fglrx-glx:i386' has no installation candidateWhen I now run steam I get the following message:OpenGL GLX context is not using direct rendering, which may cause  performance problems.For more information visit  https://support.steampowered.com/kb_article.php?ref=9938-EYZB-7457.That link takes me to a page basically asking me to install the 32-bit drivers.user@home:~$ glxinfo | grep renderingdirect rendering: YesWell that's good, I think. But when I try to run, for example, Counterstrike: Source I get this:Could not find required OpenGL entry point 'glGetError`! Either your  video card is unsupported, or your OpenGL driver needs to be updated.I'm guessing this is because I didn't install that driver?To confirm I have the right sources, here is my /etc/apt/sources.list file:user@home:~$ cat /etc/apt/sources.list                                deb http://http.us.debian.org/debian/ jessie contrib maindeb http://http.debian.net/debian/ jessie main contrib non-freedeb-src http://http.debian.net/debian/ jessie main contrib non-freedeb http://repository.spotify.com stable non-freedeb-src http://repository.spotify.com stable non-freeUnfortunately the suggested solution to the following (very similar) question was included in my steps and didn't help in my case:Debian Stable libgl1-nvidia-glx:i386 not found (trying to install Steam)I'm assuming those instructions are there because they work, and they say specifically that they're for debian jessie. What am I doing wrong here?EDIT: As Braiam points out the problem might have more to do with a steam problem that my setup. I have tried to follow one of the suggested fixes by doing this:mv  ~/.steam/ubuntu12_32/steam-runtime/i386/lib/i386-linux-gnu/libgcc_s.so.1{,.disable}However, unlike the reports of others this didn't seem to help me much (same outcome as before).
Make OpenGL GLX work with Steam client on Debian jessie
debian;drivers;ati;steam