Maybe it'snot really coming from the screen? It could be that your CPU is automatically throttled down when idle (perhaps by ACPI or the APM BIOS). Certain types of CPU throttling is known to cause an annoying whine on many machines. If this is the case then it's possible that the whine goes away when the CPU is no longer idle such as when you drag windows. A good test would be to see if the whine goes away when you run CPU intensive programs that don't affect the screen.
Carl Thompson Quoting James Nachlin <[EMAIL PROTECTED]>: > Hi listmembers, > > I have a question that's bugging me and I'm wondering if anyone > here has any suggestions: > > I have a Dell Latitude c600 laptop with the ATI M3 video adapter > and a generic Dell laptop LCD. The LCD emits a sort of high > pitched buzz or whine. I am using the r128 driver. > > This whine is not present under Windows, or in the BIOS utility > screen. It does not seem to be effected by LCD brightness, or by > changing the horizontal and vertical sync rates in the .conf > file. I do not believe it's something else on the machine that's > emitting the noise. It's not the speakers, as I've tried > headphones. One thing that will make this buzzing go away is > movement on the screen, like dragging a window. > > One final note: this sound is present even when the X server is > not running (after hitting ctrl-alt-backspace). > > Sorry if this isn't the right forum for this inquiry. Thanks for > your help. > > Jim _______________________________________________ XFree86 mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xfree86
