<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Aug 28, 2013 at 1:30 PM, Karl Dietz <span dir="ltr"><<a href="mailto:dekarl@spaetfruehstuecken.org" target="_blank">dekarl@spaetfruehstuecken.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">On 28.08.2013 22:13, Chris Porter wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">
<br>
On Wed, Aug 28, 2013 at 1:08 PM, Karl Dietz<br></div>
<<a href="mailto:dekarl@spaetfruehstuecken.org" target="_blank">dekarl@spaetfruehstuecken.org</a> <mailto:<a href="mailto:dekarl@spaetfruehstuecken.org" target="_blank">dekarl@<u></u>spaetfruehstuecken.org</a>>><div class="im">
<br>
wrote:<br>
<br>
On 28.08.2013 19:28, Daryl McDonald wrote:<br>
<br>
Greetings Mythizens, In the interest o reducing my carbon<br>
footprint I'm<br>
looking into the auto-wake/shutdown features, but I need some<br>
clarification. From this site:<br></div>
<a href="http://ghichepcanhan.com/2013/__05/29/how-to-setup-automatic-__shutdown-and-automatic-wakeup-__with-mythtv/" target="_blank">http://ghichepcanhan.com/2013/<u></u>__05/29/how-to-setup-<u></u>automatic-__shutdown-and-<u></u>automatic-wakeup-__with-<u></u>mythtv/</a><div class="im">
<br>
<<a href="http://ghichepcanhan.com/2013/05/29/how-to-setup-automatic-shutdown-and-automatic-wakeup-with-mythtv/" target="_blank">http://ghichepcanhan.com/<u></u>2013/05/29/how-to-setup-<u></u>automatic-shutdown-and-<u></u>automatic-wakeup-with-mythtv/</a>><br>
<br>
<br>
which makes me think there is no UTC option and I must use rtc,<br>
further<br>
<br>
<br>
If I understand it correctly using UTC or not is a decision that is<br>
mostly made depending on presence of other (Windows) operating systems<br>
dual-booting on the same hardware.<br>
Pro UTC: no hassle with DST etc<br>
Con UTC: hassle with dual boot<br>
<br>
You will be using the Real Time Clock chip with UTC or local time.<br>
<br>
<br>
When using automatic shutdown and wakeup you are required to set your<br>
hwclock to UTC. The time format used is stored in UTC time.<br>
</div></blockquote>
<br>
hmm, got a reference for that?<br>
<a href="http://www.mythtv.org/wiki/ACPI_Wakeup#BIOS_setup" target="_blank">http://www.mythtv.org/wiki/<u></u>ACPI_Wakeup#BIOS_setup</a> says<br>
<br>
"If supported by your environment, set the time to UTC (Coordinated<br>
Universal Time); UTC is the most desirable option because translation<br>
to local time is not required and daylight saving time is<br>
automatically handled. If UTC is not supported in your environment you<br>
will need to recalculate the time before you write it to the RTC."<br>
<br>
which matches my prior knowledge (1st and 2nd hand)<div class="HOEnZb"><div class="h5"><br>
<br>
Regards,<br>
Karl<br>
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</div></div></blockquote></div><br><br clear="all"></div><div class="gmail_extra">Yeah, the required part are my words. But, the phrase "If supported by your environment" is miss leading. Linux has supported UTC for a long long time and the BIOS RTC does not care. RTC will store any time you give it. Linux and the time and date thrown around are all in UTC.<br>
</div><div class="gmail_extra">-- <br>Working on World Domination since 2001<br>
</div></div>