Waking from sleep at specified time

[e1-531g]

Hello,
I would like to know if in OpenBSD it is possible to wake laptop from suspend or stand-by at particular time. Something similar to rtcwake from Linux and this is also possible in Windows by Task Scheduler.

[jggimi]

I don't think so. But it is a very good question. The apm(8) man page lists three states:

• -S: standby (light sleep)
• -s/zzz: suspend (deep sleep)
• -z/ZZZ hibernation

apm(8) goes on to state that wakeup capability is platform-specific:

Each system provides methods for waking from suspend or hibernate. For those machines supporting acpi(4) style suspend/resume (or hibernate/unhibernate) semantics, the wakeup devices for each sleep state are printed during system boot in dmesg(8).

The apm(4) driver page states that requests to standby or suspend are passed to ACPI. There are no parameters. Therefore, wakeup is controlled solely by the devices in the wakeup list in your dmesg. On this laptop, they are:

acpi0: wakeup devices LID_(S3) SLPB(S3) IGBE(S4) EXP4(S4) EXP7(S4) EHC1(S3) EHC2(S3) HDEF(S4)