[ltp] Suspend and resume at a particular time?

[Michael Perry]

If you happen to use apm there is a pretty nifty script that comes with 
the debian apm stuff called apmsleep.  It will put a system down and 
wake it up at a specific time or after a number of units of time has passed.

I like the acpi thing!  Many thanks for that one.


Martin Samuelsson wrote:
> Norman Walsh @ 2006-04-12 (Wednesday), 13:06 (-0400)
>> / Damien Challet <dchallet@onetel.com> was heard to say:
>> | In the old thinkpads (600 etc) days, it was possible to set a wake-up time 
>> | with tpctl. I would be very interested to know how to do it with acpi.
>>
>> Hey, "ACPI". That was the magic word I needed. On my T42p at least,
>> setting a wakeup time in /proc/acpi/alarm seems to do the trick:
>>
>> I ran the following command as root:
>>
>>   date -d "5 minutes" +"%Y-%m-%d %H:%M:%S" > /proc/acpi/alarm
>>
>> then suspended my machine. Five minutes later it sprang back to life.
>> Sweet.
> 
> Today I realized two things leading to having timed return from sleep
> working for me. (Hurray! Hurray!)
> 
> First, there is an option in the bios configuration to enable or disable
> acpi alarm. I don't think I've fiddled with it before, so it can
> probably be set to off by default.
> 
> Unless you're having your computer clock to local time, the above
> command only works for people living within the UK. Everyone else has to
> take time zones into consideration and type something like this:
> 
> date -ud "5 minutes" +"%Y-%m-%d %H:%M:%S" > /proc/acpi/alarm
> --
> /Martin

-- 
Michael Perry | Do or do not. There is no try --Master Yoda
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