Messages in this thread | | | Date | Wed, 4 Dec 2002 14:33:37 +0000 | From | Dave Jones <> | Subject | Re: Ctrl-Alt-Backspace kills machine not X. ACPI? |
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On Wed, Dec 04, 2002 at 02:27:19PM +0000, Alex Bennee wrote: > I was under the impression that once Linux took over from the BIOS it > had complete control of the system, including the interrupt/exception > table. I am assuming some sort of interrupt or exception must be being > generated by this keypress that runs some BIOS code.
It's likely an SMM event, which Linux doesn't even get to see. The BIOS handles it appropriately. The chipset has a bit you can flip to disable this 'feature', but there was a caveat iirc, something like 'it turns itself back on every so often'. I'll let Egbert say more about it, as he had the relevant datasheet.
Dave
-- | Dave Jones. http://www.codemonkey.org.uk | SuSE Labs - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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