debian jessie
libGL error: dlopen /usr/lib/i386-linux-gnu/dri/nouveau_dri.so failed (/home/steam/.local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /usr/lib/i386-linux-gnu/dri/nouveau_dri.so))
libGL error: dlopen ${ORIGIN}/dri/nouveau_dri.so failed (/home/steam/.local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /usr/lib/i386-linux-gnu/dri/nouveau_dri.so))
при этом 32-х разрядный glxinfo и glxgears работают без проблем