可能与驱动程序有关。我在 AMD 处理器和显卡上运行 Ubuntu 16.04 64 位。尝试运行 steam 时LIBGL_DEBUG=verbose出现以下情况：
Running Steam on ubuntu 16.04 64-bit
STEAM_RUNTIME is enabled automatically
/bin/bash: /home/grizeldi/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/lib/x86_64-linux-gnu/libtinfo.so.5: no version information available (required by /bin/bash)
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
grep: symbol lookup error: grep: undefined symbol: pcre_jit_stack_alloc
Installing breakpad exception handler for appid(steam)/version(1474415843)
libGL: OpenDriver: trying /usr/lib/i386-linux-gnu/dri/tls/radeonsi_dri.so
libGL: OpenDriver: trying /usr/lib/i386-linux-gnu/dri/radeonsi_dri.so
libGL: dlopen /usr/lib/i386-linux-gnu/dri/radeonsi_dri.so failed (/usr/lib/i386-linux-gnu/libLLVM-3.8.so.1: symbol _ZNKSt3_V214error_category10_M_messageB5cxx11Ei, version GLIBCXX_3.4.21 not defined in file libstdc++.so.6 with link time reference)
libGL: OpenDriver: trying ${ORIGIN}/dri/tls/radeonsi_dri.so
libGL: OpenDriver: trying ${ORIGIN}/dri/radeonsi_dri.so
libGL: dlopen ${ORIGIN}/dri/radeonsi_dri.so failed (${ORIGIN}/dri/radeonsi_dri.so: cannot open shared object file: No such file or directory)
libGL: OpenDriver: trying /usr/lib/dri/tls/radeonsi_dri.so
libGL: OpenDriver: trying /usr/lib/dri/radeonsi_dri.so
libGL: dlopen /usr/lib/dri/radeonsi_dri.so failed (/usr/lib/dri/radeonsi_dri.so: cannot open shared object file: No such file or directory)
libGL error: unable to load driver: radeonsi_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: radeonsi
libGL: OpenDriver: trying /usr/lib/i386-linux-gnu/dri/tls/swrast_dri.so
libGL: OpenDriver: trying /usr/lib/i386-linux-gnu/dri/swrast_dri.so
libGL: dlopen /usr/lib/i386-linux-gnu/dri/swrast_dri.so failed (/usr/lib/i386-linux-gnu/libLLVM-3.8.so.1: symbol _ZNKSt3_V214error_category10_M_messageB5cxx11Ei, version GLIBCXX_3.4.21 not defined in file libstdc++.so.6 with link time reference)
libGL: OpenDriver: trying ${ORIGIN}/dri/tls/swrast_dri.so
libGL: OpenDriver: trying ${ORIGIN}/dri/swrast_dri.so
libGL: dlopen ${ORIGIN}/dri/swrast_dri.so failed (${ORIGIN}/dri/swrast_dri.so: cannot open shared object file: No such file or directory)
libGL: OpenDriver: trying /usr/lib/dri/tls/swrast_dri.so
libGL: OpenDriver: trying /usr/lib/dri/swrast_dri.so
libGL: dlopen /usr/lib/dri/swrast_dri.so failed (/usr/lib/dri/swrast_dri.so: cannot open shared object file: No such file or directory)
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
在同一台机器上，在 Ubuntu 15.10 32 位上，steam 无法启动，但我通过删除 steam 运行时中的 libstdc++.so 解决了这个问题。我在 64 位上做了同样的事情（之前我得到的错误与 32 位上的相同），但现在我得到了上述错误。帮忙吗？
编辑：这确实能让蒸汽启动并运行：升级到 Ubuntu 16.04 后 Steam 无法启动
答案1
我在蒸汽运行方面也遇到了同样的问题。
您需要执行以下几行：
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get upgrade
这会将您的 libstdc++6:i386 和 amd64 升级到 libstdc++.so.6.0.22
之后你必须执行：
ln -sf /usr/lib/i386-linux-gnu/libstdc++.so.6 $HOME/.local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libstdc++.so.6
如果问题再次出现，则只需再次执行最后一个命令即可。它对我来说很有效。