[ACPI] 2.6.12-rc5

[ACPI] 2.6.12-rc5

[Kenneth Parrish]

Computer: Cyrix MII processor, VIA VP3 chipset  e-machines 1999
Kernels various, now 2.6.12-rc5

Observation: experimental ACPI sleep state, aka active standby,
appears to work with mainline kernels in that it's possible to
do
# echo standby > /sys/power/state
and have the system suspend. The computer's green led that's inset
into the power button blinks slowly, then. And pressing the power button
brings the system back, unless you wait too long. I'm not sure exactly
how long, but I guess it may be roughly an hour or so until linux
no longer returns when the power button is pressed briefly.

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Re: [ACPI] 2.6.12-rc5

[Pavel Machek]

Hi!

> Computer: Cyrix MII processor, VIA VP3 chipset  e-machines 1999
> Kernels various, now 2.6.12-rc5
> 
> Observation: experimental ACPI sleep state, aka active standby,
> appears to work with mainline kernels in that it's possible to
> do
> # echo standby > /sys/power/state
> and have the system suspend. The computer's green led that's inset
> into the power button blinks slowly, then. And pressing the power button
> brings the system back, unless you wait too long. I'm not sure exactly
> how long, but I guess it may be roughly an hour or so until linux
> no longer returns when the power button is pressed briefly.

Did it work properly in any previous kernel?
								Pavel

Re: [ACPI] 2.6.12-rc5

[Kenneth Parrish]

-=> Pavel Machek wrote to Kenneth Parrish <=-

Re: ACPI sleep states and 2.6.12-rc5, VIA VP3, Cyrix MII:
    not wakeable after delay

 PM> Did it work properly in any previous kernel?
The testing sleep periods were mostly short, but, a couple of
times it wouldn't wake - i think only after longer stand-bys. i don't
recall the kernel versions. 2.6.12-rc4-mm1 and -mm2 don't wake at all.
and there's the C1 state at /proc/acpi/processor/CPU0/power but no C2 .

14!cat /proc/acpi/processor/CPU0/power  # 2.6.12-rc5

active state:            C2
max_cstate:              C8
bus master activity:     00000000
states:
    C1:                  type[C1] promotion[C2] demotion[--] latency[000]
usage[00021770]
   *C2:                  type[C2] promotion[--] demotion[C1] latency[100]
usage[01209363]

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