实际上，我已经安装了新的 Ubuntu 15.04 64 位，当我尝试在其上安装 Steam 时，出现了问题。事实上，我已经从 Steam 网站下载了 deb 包，安装了它，当我启动它时什么也没有发生。我试图从终端启动它以及我所拥有的
$ steam
Running Steam on ubuntu 15.04 64-bit
STEAM_RUNTIME is enabled automatically
Installing breakpad exception handler for appid(steam)/version(0_client)
libGL error: unable to load driver: r600_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: r600
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
agung@agung-K43SJ:~$ steam
Running Steam on ubuntu 15.04 64-bit
STEAM_RUNTIME is enabled automatically
Installing breakpad exception handler for appid(steam)/version(0)
libGL error: unable to load driver: nouveau_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: nouveau
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
在此之前，我也尝试从终端安装 Steam，但在下载更新后它没有启动。
谁能帮我找到安装 Steam 的解决方案？