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24 Posts
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15525
August 16th, 2010 12:00
Power Saving In BIOS
Hi all. The BIOS for my Dell XPS 435t/900 has a setting for the system power saving configuration, but offers no information on what the two choices - S1 and S2 - mean in terms of what they do and don't do. The machine's only a month old so my BIOS is up-to-date or nearly so. Anyone know what these mean?
Oh for the good old days when computers came with decent technical documentation (my old HP made available a downloadable a list of all the BIOS options and what they meant).
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Jeff Hoffman
2 Intern
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881 Posts
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August 16th, 2010 12:00
No clue about the BIOS Power Saving Options. I tried to send you a PM but was unable to do so. Have you tried this Configuration Checker. ? It was supplied by Chris from Dell. Here at least it reports Part Numbers!
Jeff :emotion-22:
ottabear
24 Posts
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August 16th, 2010 14:00
Mucho gracias Jeff for continuing to remember about my Part #s addiction - the config checker has the same list of components as my order confirmation and invoice, but they listed some other codes (sales, maybe) rather than these seemingly genuine part #s. Shame on me for having checked the configurator when I first looked at the Dell support site and totally failing to notice that it had the Dell part #s!
Wouldn't expect you to know about the BIOS settings without having a quite similar machine, but no worry - I realized after the post that this is exactly the sort of question I can put to the regular tech support chat people who don't accept "general knowledge" questions but focus on operational and warranty support for specific named machines. Thanks again.............
datapod
2 Intern
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371 Posts
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August 16th, 2010 15:00
The "s" codes for global power states in power management are pretty standard. Nothing Dell specific.
Have a gander @ http://en.wikipedia.org/wiki/Advanced_Configuration_and_Power_Interface
HTH
D
ottabear
24 Posts
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August 16th, 2010 16:00
Thanks, datapad, the link to the ACPI article was a complete answer.
In my setup the WIN 7 power management settings determine when the "sleep" state begins and how it effects other devices like the display, while the BIOS setting determines the "depth" of the sleep state. My available choices of states S1 and S2 are the "mildest" of several possible depths of sleep; primarily S1 stops CPU activity at bedtime but leaves it idling on low power, while S2 actually powers it off. I think I'll go with S1.
Thanks again.............