334.21 - Performance level stuck after resume from suspend

After resuming from suspend, the performance level of my card (Geforce GT360M, which has 3 performance levels: 0, 1, 2) gets stuck at level 1. The level does not change even when I select “Prefer Maximum Performance” as the preferred mode and start intensive graphic games (flightgear, supertuxkart).
The video card works fine after logging out and logging in again.

nvidia-bug-report.log.gz (63.2 KB)