For some weeks I am getting this monotone sound from my external speakers as soon as the monitors wake up. They are plugged in from the front audio out. Disappears as soon as they sleep. Speakers are at least 4 feet away from the monitors and this behavior is new, exact same setup as before the sound appeared. The internal speaker does not whine. Thanks for your help!
G5 DP1.8, ati 9800 radeon, Panther 3.9.