Hi Thanks Dave and Kent for the info. I tried the Ctrl/Alt/{+,-} thing, and it did have a slight effect, or at least I could convince myself that I heard something of a difference. I've also noticed that it doesn't start right away after the Linux login screen comes, but takes a couple of minutes. Also, as soon as it kicks out of graphics mode on reboot, the sound goes away (I can still hear it in my head -- Arrrggh). Do you think this is a defective monitor or is it something I've done with the driver, such as using the wrong one (and therefore the rest are working their way to a problem also). Thanks again Ed