Messages in this thread | | | Date | Fri, 1 Apr 2005 21:18:48 +0200 | From | Pavel Machek <> | Subject | Re: [2.6.12-rc1][ACPI][suspend] /proc/acpi/sleep vs /sys/power/state issue - 'standby' on a laptop |
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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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