I can also confirm that this issue still persists, even after 13.04 got released. I am now on NVIDIA Driver Version: 319.17, and the behavior is exactly the same -- go into suspend, come out of suspend, and -- only then -- can the brightness can be adjusted.
I can also confirm that this issue still persists, even after 13.04 got released. I am now on NVIDIA Driver Version: 319.17, and the behavior is exactly the same -- go into suspend, come out of suspend, and -- only then -- can the brightness can be adjusted.