gfxCardStatus is an open-source menu bar application that keeps track of which graphics card your unibody, dual-GPU MacBook Pro is using at any given time, and allows you to switch between them on demand.
Switching to discrete keeps some Steam games from starting up (Portal 2, Puzzle Agent 2). Others suffer from corrupted graphics (Left4Dead 2). Tried switching by system settings and new login - worked.
Switching to discrete keeps some Steam games from starting up (Portal 2, Puzzle Agent 2). Others suffer from corrupted graphics (Left4Dead 2). Tried switching by system settings and new login - worked.