miniwaites;604094 Wrote: > Hello All, > > Apologies if this has been asked before - I looked at the project > website, but couldn't find the answer. > > I'm just wondering how the server alarm wakeup feature works as > currently I'm having to use a wireless bridge to connect my players to > the server and so WOL doesn't work. Will the Alarm Wakeup feature > wakeup the server automatically in time for an alarm without any WOL > signal being sent? > > many thanks Yes, SrvrPowerCtrl wakes up your server "internally", i.e. without WOL.
SrvrPowerCtrl, before it sends your server to sleep, looks at your local saved alarms and at squeezebox client alarms set at mysqueezebox.com (stored locally in server.prefs) and figures out when the next alarm ought to occur. SrvrPowerCtrl then programs the server to wake up 5 minutes before the scheduled alarm. It even adjusts the wakeup time when DST/SummerTime time changes happen in the spring and fall. The precise mechanism for waking the server up varies by operating system. On linux systems, SrvrPowerCtrl writes data to /sys/class/rtc/rtc0/wakealarm and the server wakes itself up from any state, including all-the-way off. On OSX systems, SrvrPowerCtrl uses the 'pmset' utility to schedule the wakeup. I know Macs that can wake themselves up from sleeping or hibernating, but I don't remember if they can wake from all-the-way-off. On windows systems, SrvrPowerCtrl calls an external utility, SCPowerTool.exe which sets a "system wake timer" which Windows honors and wakes the system at the appropriate time. So on windows, the system will wake from suspend, but not from off or, I believe, from hibernation. All this ought to work with more modern-ish motherboards...say anything younger than 4 years old. -- gharris999 ------------------------------------------------------------------------ gharris999's Profile: http://forums.slimdevices.com/member.php?userid=115 View this thread: http://forums.slimdevices.com/showthread.php?t=48521 _______________________________________________ plugins mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/plugins
