Ошибка steam при запуске игры с использованием optimus

Mint 17, при попытке запуска игры возникает ошибка:
Game update: AppID 570 "Dota 2", ProcID 27118, IP 0.0.0.0:0
ERROR: ld.so: object '/home/myuser/.steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ATTENTION: default value of option vblank_mode overridden by environment.
ATTENTION: default value of option vblank_mode overridden by environment.
ERROR: ld.so: object '/home/myuser/.steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ATTENTION: default value of option vblank_mode overridden by environment.

malloc: unknown:0: assertion botched
free: called with unallocated block argument
last command: (null)
Aborting...Aborted
Game removed: AppID 570 "Dota 2", ProcID 27118 

Как починить:
# sudo mv /usr/lib/x86_64-linux-gnu/primus/libGL.so.1 /usr/lib/x86_64-linux-gnu/primus/libGL.so.1.bak
# sudo ln -s /usr/lib/i386-linux-gnu/primus/libGL.so.1 /usr/lib/x86_64-linux-gnu/primus/libGL.so.1