UPS Waking Mac Mini?

Question

I&#x27;m using an APC Back-UPS CS350.  I noticed in Console that my Mini has been waking when I&#x27;m not around.  Here&#x27;s a Console log:4/20/12 11:56:17 PM          kernel          The USB device Back-UPS CS 350 FW:805.q8.D USB FW:q8 (Port 3 of Hub at 0x4000000) may have caused a wake by issuing a remote wakeup (2)Several processes later, the Mini goes back to sleep.  As you can see, this event was at 11:56 PM; I&#x27;ve hadit happen also at 7:03AM, for instance.Energy Saver Pref shows...UPS&gt;current charge 100%.  I also have "Wake for network access" unchecked.Any ideas?Thanks!

David Cun · Answer

I thought I&#x27;d better show a more complete Console log...4/20/12 11:56:17 PM          kernel          Wake reason &#x3D; OHC14/20/12 11:56:17 PM          kernel          System Wake4/20/12 11:56:17 PM          kernel          Previous Sleep Cause: 54/20/12 11:56:17 PM          kernel          The USB device Back-UPS CS 350 FW:805.q8.D USB FW:q8 (Port 3 of Hub at 0x4000000) may have caused a wake by issuing a remote wakeup (2)4/20/12 11:56:18 PM          kernel          Trying to change a collection in the registry4/20/12 11:56:18 PM          kernel          Backtrace 0x509f98 0x509c53 0x9cf403 0x9d1807 0x9d0572 0x9cc1dd 0x9c6f294/20/12 11:56:18 PM          kernel          Kernel Extensions in backtrace (with dependencies):4/20/12 11:56:18 PM          kernel          com.Logitech.Control Center.HID Driver(3.4.0)@0x9ba000-&gt;0x9e5fff4/20/12 11:56:18 PM          kernel          dependency: com.apple.iokit.IOUSBFamily(4.2.4)@0x9410004/20/12 11:56:18 PM          kernel          dependency: com.apple.iokit.IOHIDFamily(1.6.6)@0x9770004/20/12 11:56:18 PM          kernel          dependency: com.apple.iokit.IOUSBHIDDriver(4.2.0)@0x9b30004/20/12 11:56:18 PM          kernel          00000000  00000020  NVEthernet::setLinkStatus - not Active4/20/12 11:56:18 PM          configd[13]          network configuration changed.4/20/12 11:56:19 PM          kernel          Ethernet [nvenet]: Link up on en0, 100-Megabit, Full-duplex, No flow-control, Debug [796d,0000,0de1,0005,41e1,0000]4/20/12 11:56:19 PM          kernel          05f5e100  00100026  NVEthernet::setLinkStatus - Active4/20/12 11:56:19 PM          kernel          Ethernet [nvenet]: Link up on en0, 100-Megabit, Full-duplex, No flow-control, Debug [796d,0000,0de1,0005,41e1,0000]4/20/12 11:56:19 PM          kernel          05f5e100  00100026  NVEthernet::setLinkStatus - Active4/20/12 11:56:20 PM          configd[13]          network configuration changed.4/21/12 12:09:19 AM          ScreenSaverEngine[771]          __CFServiceControllerBeginPBSLoadForLocalizations timed out while talking to pbs....."I know that OHC1 is "Open Host Controller" and that it usually refers to an external FW or USB device, which is what the UPS is....I reckon.  It also mentions "Logitech Control Center" because I&#x27;m using a Logitech wireless mouse; but I don&#x27;t think that&#x27;s the problem; I believe that process happens on every &#x27;awakening&#x27;.

Jere Käpyaho · Answer

David,I&#x27;ve had an APC Back-UPS 550 for about a month now. It&#x27;s connected to my iMac with USB. Last night we had a thunderstorm. I made some recordings of the thunder at 2.06 AM with my iPhone, and this morning it occurred to me to look at the system logs in case there had been a power outage.Sure enough, this is what I found in the log:30.7.2012 2.02.34,000 kernel: Wake reason: OHC130.7.2012 2.02.34,000 kernel: Previous Sleep Cause: 530.7.2012 2.02.34,000 kernel: The USB device Back-UPS ES 550G FW:870.O2 .I USB FW:O2  (Port 1 of Hub at 0x4000000) may have caused a wake by issuing a remote wakeup (2)This is the only entry in the log that mentions the Back-UPS since I installed it. I guess there wasn&#x27;t an outright power failure, but the surge protector kicked in. If you have this happening frequently, then your power might be cutting from time to time, you may have power spikes, or it&#x27;s something else altogether.Hope this helps,Jere