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    SubjectRe: [RFD] Automatic suspend
    On Mon, Feb 16, 2009 at 11:58:31PM +0100, Pavel Machek wrote:

    > If no devices are being used, and next wakeup is far enough in the
    > future, just put system to sleep. Long enough == so far away that
    > suspend/wakeup is short compared to that... like 20 seconds on PC.

    This is intrinsically difficult with PCs, since we have such a poorly
    defined set of wakeup events. We can't wakeup on generic network
    traffic, just WoL. Many machines won't wake up on keyboard events.
    Meanwhile, on embedded it's becoming a less interesting problem because
    idle and suspended are often now equivalent states. Concentrating on
    runtime PM of as much hardware as possible is arguably more interesting
    for the majority of use cases.

    --
    Matthew Garrett | mjg59@srcf.ucam.org


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