You gotta turn it on all the way.

Ah, the dimmer switch. Brilliant idea. Finally, I can control how much light my lamps emit. Look at me, throwing off the shackles of my techno-slavery! Emancipation!

Or, well, no.

With this one lamp, if you fail to turn the dimmer switch to its brightest point, the lamp buzzes. So... it's not really a dimmer switch, it's just a slow-motion on/off switch. Now you have to do more work just to turn the light on.

Jerk.