Here is how I get X3:AP to work: I did install Linux mate 14.1 64 bit on my Game PC. I did update the OS and install the latest 310 version of Nvidia proprietary driver. I did read the latest review from Dedoimedo:http://www.dedoimedo.com/computers/linux-mint-olivia-cinnamon-high.htmlhttp://www.dedoimedo.com/games/steam-linux-beta-here.html
The Steam software distribution service beta is currently only available on Ubuntu 12.04, at least officially, although you can try to get it running on any distro. If you have an Nvidia card, you will also need the latest Nvidia 310 drivers. Steam beta client comes as a single DEB package, named steam.deb. Before you execute this file, you will need to do a bit of preparatory housekeeping first, though. Namely, Steam client is a 32-bit package, so if you have a 64-bit system, you will must install the 32-bit libraries for it. This is done by running the following command:
sudo apt-get install ia32-libs
Once this step is complete, you can proceed with the .deb package installation.
I did install ia32-libs like he said and dowloaded the Steam file from here:http://media.steampowered.com/client/installer/steam.deb
Once it is downloadet, I did go to my Downloads folder and right click on the "steam_latest.deb" file and choose "Open with GDebi package installer"
When Steam starts first time, it send me code to my e-mail adress.. it may be so because I did have installed Steam on openSuse 12.3 earlier, it
thinks I have another computer, but the hardware was the same, just another hard drive and now Linux mint installed.
Now.. I did read a lot about Steam on Linux. Many people have problems with AMD drivers. In my case I did go to my Game developers website:http://forum.egosoft.com/viewtopic.php?t=335500
and read all that trough, in particular about the hardware they have and Operating systems. Only after that, I try Steam on my PC.