Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Running on UPS power
- Thread starter jjk454ss
- Start date
- Sort by reaction score
you may just be experiencing a small under-voltage (brown-out). If you have a window AC or something that draws a lot when it starts up (like a fridge) it can cause the UPS to kick in.
also in summer voltages tend to be a bit lower, due to everyone's higher power use. so if it's something you don't normally see happen, it could just be that it's warm out, and you're down a couple volts to start off. so when you drop a couple more, the ups kicks in.
do the lights dim a bit when it happens? would have to be a normal light bulb to really see a difference.
also in summer voltages tend to be a bit lower, due to everyone's higher power use. so if it's something you don't normally see happen, it could just be that it's warm out, and you're down a couple volts to start off. so when you drop a couple more, the ups kicks in.
do the lights dim a bit when it happens? would have to be a normal light bulb to really see a difference.
OK, thanks. That makes sense, the voltage is at 118-119, so not real low. I am normally not using the mini when it happens, the dialog boxes are just up when I do go to use it. I'll keep an eye on it and see if I can't confirm that its a low voltage issue. It may be that it does it when my air kicks on or something. Thanks for the help.
Is the message popping up via Growl? I recently upgraded my Tripp-lite 750VA UPS to a Cyberpower 1350 VA model. I never plugged the USB cable from the Tripp-lite into my Mac (I relied on manual powerdown if there was a power outage). With the Cyberpower, since I was on the floor anyway, I hooked up the USB cable. Growl reports me as being on USB power now. However, I think that it's Growl's way of saying you have a UPS connected, since I'm obviously on line power.