On 03-Dec-99 Edwin Schreuder (EMN) wrote:
> I'm wondering if Linux can handle the sleep mode provided by a CPU.
>
> Normally on battery powered systems you want the system to go into a sleep
> mode when it is not used.
> This includes the CPU. I did notice that Linux has APM, but I am wondering if
> this is only to control the power of peripherals and not the CPU it self.
> Then when needed again, the system should continue from where it was as msec,
> rather than seconds.
>
> Can anyone give me some pointers on this?
When you configure the kernel you have some APM questions there.
Character devices->Advanced Power Management BIOS support->
Ignore USER SUSPEND
Enable PM at boot time
Make CPU Idle calls when idle <<< You want this
Enable console blanking using APM <<< This turns off background light on LCD
displays
Power off on shutdown <<< This is nice too
Ignore multiple suspend
Then you have apmd(8) that manages sleep/freeze/hybernation modes.
And apm(1) as a user interface.
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