On Sun, 08 Apr 2007, Morten Friesgaard wrote: > I'm running a mythbox, and ever since we had our yearly change of > daylight savings (summer time) my computer wakes up late. At first it > was only an hour, then I set the time with hwclock (realised that > CLOCK_SYSTOHC="no"), now it is 2 hours late. And it is really precise > (1-2 hours later), and it is certainly because of daylight savings. > > Any ideas? My guess is that you have to set ACPI wake times to *exactly* the time zone you use your RTC in. Typically UTC, but semi-broken MS-compatible setups use the local time zone. The kernel can know the timezone, but almost nobody ever sets that right, and it is not summer-time aware anyway (too complex). It is best to just keep everything UTC as far as the kernel goes, *including* the RTC. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html