[mythtv-users] help and feature request: mythwelcome and acpi

Phill Edwards philledwards at gmail.com
Fri Sep 29 02:05:03 UTC 2006

> I tried to understand how use mythwelcome with acpi suspend on ram.
> I found a thread in the ML about that topic but I don't understand
> clearly how to do this.
> It seems that some commands are hardcoded in myth and assume the use
> of nvram instead of acpi (for example for the time format).
> so let me "ask" help (feature):
> can anyone explain (integrate) the use of mythwelcome and acpi suspend?

I'm not sure about this, but think acpi suspend is something which the
kernel manages rather than Myth. You have to have special modules or
stuff compiled into the kernel, I believe, which allows it to detect
inactivity and go into suspend mode. It seems to be hard to set up
because if you have sylogging activity going on all the time, for
example, then it will never think it's idle and it won't work. Also,
it's quite new and not that mature.

Mythwelcome uses nvram wakeup which is a user space application. The
combination of these:
a) writes a date/time to the BIOS for when the PC should restart
b) runs some checks to ensure it's OK to power down
c) executes the power down command

So Mythwelcome and 2 acpi suspend are 2 _different_ solutions to
achieve a similar goal.

Happy to be corrected on any of this.


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