Messages in this thread | | | Date | Wed, 10 Sep 2003 16:12:43 +1000 | From | Stephen Rothwell <> | Subject | Re: [PM] Passing suspend level down to drivers |
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On Wed, 10 Sep 2003 01:07:55 +0200 Pavel Machek <pavel@suse.cz> wrote: > > I'd not worry about runtime states for now. [If user wants to sleep > one device, we probably can allow that, but I do not think it is > reasonable to do much more for 2.6.X]. That leaves us with: > > APM suspend-to-ram > APM suspend-to-disk
We do not know which of these is going to happen, it is entirely up to the BIOS writers and the BIOS configuration ... i.e. on my laptop, I have two suspend buttons - one for suspend to ram, one for suspend to disk, but under APM the kernel merely gets a SUSPEND event no matter which button I press.
However, there is APM standby
On another note, APM does allow for individual device power management (i.e. you can tell the BIOS "suspend the first disk" or "power off all displays"). I have been wondering if we want to disable the BIOS's device power management now that we are begining to do it ourselves. -- Cheers, Stephen Rothwell sfr@canb.auug.org.au http://www.canb.auug.org.au/~sfr/ - 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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