Re: Linux & X11 & IRQ Interrupts

From: Grogan (
Date: Mon May 06 2002 - 11:17:00 EST

Affirmative... A while back, my PC always used to make strange sounds when the hlt instruction was engaged/disengaged. It was a whine that changed in pitch. This happened in any OS that used it. (Linux, Windows NT/2000, Windows 98 with the Rain CPU cooler program etc.). I just figured that was normal for my PC, until one day my power supply fan died and I had to replace the power supply. That was the last time I heard it.


On Mon, 6 May 2002 16:24:27 +0100 (BST)
Alan Cox <> wrote:

> Well you should probably discuss that with your power supply vendor. Linux
> makes strong efforts to get the CPU in powered down mode as much as it can
> Alan
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