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SubjectRe: [2.6.12-rc1][ACPI][suspend] /proc/acpi/sleep vs /sys/power/state issue - 'standby' on a laptop
Hi!

> I've noticed something strange with issuing 'standby' to the system:
>
> when echoing "standby" to /sys/power/state, nothing happens, not even a log or
> system activity to attempt standby mode.
>
> However, trying echo "1" to /proc/acpi/sleep the system attempts to (standby)
> and aborts:
>
> [4295945.236000] PM: Preparing system for suspend
> [4295946.270000] Stopping tasks:
> =============================================================================|
> [4295946.370000] Restarting tasks... done
>
> We get no reason as to why it quickly aborts.

> [4294672.065000] ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3])
> [4294676.827000] ACPI: (supports S0 S3 S4 S5)


...aha, but your system does not support S1 aka standby.

> What is '1' in /proc/acpi/sleep? standby mode is not the same as suspend to
> ram? when I put a normal desktop in standby mode its still 'on' but the hard
> disk is put to sleep and the system runs in a lower power mode.

stanby != suspend to ram.

Pavel
--
64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms

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