Author Topic: Mac turning on by itself?  (Read 2838 times)

Offline Syntho

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 1119
Mac turning on by itself?
« on: August 19, 2019, 03:34:08 PM »
I noticed that my 9600 mysteriously was booted yesterday, so I turned it off. I went to sleep, then woke up to it on again. I came into the studio and shut it down, but as soon as I did it... turned on again. The Shut Down command is now functioning as a reboot command. It refuses to turn off. Why is this?

Online Greystash

  • Enthusiast Member (25+ Posts)
  • ***
  • Posts: 88
  • Too many Macs..
    • Mac Classic, Mac Attic
Re: Mac turning on by itself?
« Reply #1 on: August 19, 2019, 03:51:05 PM »
That used to happen constantly with my 8100 and it drove me nuts!! It would turn on every night and I would turn it off, then 30mins later it would turn on again. It would get worse and start up again as soon as I turned it off!
I can't remember if I ever fixed this, but have you tried resetting PRAM, PMU etc? I removed the PMU battery from mine, maybe this solved it? It was too long ago...

Offline OS923

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 504
Re: Mac turning on by itself?
« Reply #2 on: August 21, 2019, 10:33:21 AM »
Remove the preferences of the energy saver control panel.

Offline IIO

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 2227
  • new to the forums
Re: Mac turning on by itself?
« Reply #3 on: August 22, 2019, 03:49:39 AM »
it tries to get your attention.
"It is true that the "pre-emptive multitasking" advantage present in OS X can be illustrated by downloading CD-ROM ISOs and rendering chaos theory formulas while simultaneously instant messaging and posting on FaceBook what you ate... but in reality, what did you create?"
- DieHard, random forum troll at macos9lives.com

Offline macStuff

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 1366
  • http://www.OldschoolDAW.com
    • OldschoolDAW.com
Re: Mac turning on by itself?
« Reply #4 on: August 22, 2019, 05:06:39 AM »
get a powerbar with a switch and call it a day

Offline GaryN

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 1040
  • active member
Re: Mac turning on by itself?
« Reply #5 on: August 22, 2019, 04:07:03 PM »
Remove the preferences of the energy saver control panel.
THIS is the correct answer. Energy Saver has the ability to turn the computer on and off at selected times.
If the prefs get scrambled, weird shit happens.
it tries to get your attention.
Just like people do

Offline Syntho

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 1119
Re: Mac turning on by itself?
« Reply #6 on: August 22, 2019, 09:39:26 PM »
I hadn't booted it in like 2 months though. Suddenly it came alive after 2 months, then the issue started. Hmm.

Offline GaryN

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 1040
  • active member
Re: Mac turning on by itself?
« Reply #7 on: August 23, 2019, 12:12:54 AM »
Well, there is always the possibility that something else less likely has gone wrong, but a simple trashing of prefs is a common first repair step.

Offline OS923

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 504
Re: Mac turning on by itself?
« Reply #8 on: August 23, 2019, 08:52:36 AM »
trashing of prefs is a common first repair step.
Can work for internet connections too.

Offline Philgood

  • Gold Member (200+ Posts)
  • *****
  • Posts: 311
Re: Mac turning on by itself?
« Reply #9 on: August 23, 2019, 09:03:58 AM »
But did you trashed the preference file actually and did it worked?
*G4 MDD 1.25GHz (Single 2003)* with 2x 80Gb harddrives, 1Gb RAM, Tascam US-428 and Edirol FA-101 USB/Firewire soundcards-*iMac G3 DV 400MHz* with installs from OS 8.6-OSX Tiger on different harddrives-*Powerbook G4 1.67Ghz* with new SSD ! Love it.

Offline OS923

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 504
Re: Mac turning on by itself?
« Reply #10 on: August 24, 2019, 01:34:28 AM »
I remember that I was trying client/server software but I didn't get the internet connections to work. I trashed the preferences of I think the AppleTalk, TCP/IP, and Internet control panels. Then it did what I configured in the control panels.

Offline IIO

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 2227
  • new to the forums
Re: Mac turning on by itself?
« Reply #11 on: August 26, 2019, 04:32:49 AM »
isnt "reboot after power failure 0/1" part of the PRAM?
"It is true that the "pre-emptive multitasking" advantage present in OS X can be illustrated by downloading CD-ROM ISOs and rendering chaos theory formulas while simultaneously instant messaging and posting on FaceBook what you ate... but in reality, what did you create?"
- DieHard, random forum troll at macos9lives.com

Offline Syntho

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 1119
Re: Mac turning on by itself?
« Reply #12 on: September 14, 2019, 11:25:13 PM »
I used the ASR method to restore my old settings recently. It was fine for a few days, then whammo, it starts up in the middle of the night again. I reset the PRAM and everything too. Trashing the preferences doesn't seem to work either.  ???

Offline IIO

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 2227
  • new to the forums
Re: Mac turning on by itself?
« Reply #13 on: September 20, 2019, 06:38:38 PM »
PSU reset also?
"It is true that the "pre-emptive multitasking" advantage present in OS X can be illustrated by downloading CD-ROM ISOs and rendering chaos theory formulas while simultaneously instant messaging and posting on FaceBook what you ate... but in reality, what did you create?"
- DieHard, random forum troll at macos9lives.com

Offline OS923

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 504
Re: Mac turning on by itself?
« Reply #14 on: September 22, 2019, 01:14:54 AM »
Try the CUDA button.

Offline Syntho

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 1119
Re: Mac turning on by itself?
« Reply #15 on: September 22, 2019, 06:02:02 PM »
PSU reset also?

How do I reset the PSU?

Try the CUDA button.

I'll try this too.

Offline IIO

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 2227
  • new to the forums
Re: Mac turning on by itself?
« Reply #16 on: September 22, 2019, 06:06:12 PM »
cuda and pmu reset is the same thing. it is the button beside the battery and it has to be pressed for about 5 seconds while the machine is off.

some computers have tow buttons then it is the one closer to the battery. :)
"It is true that the "pre-emptive multitasking" advantage present in OS X can be illustrated by downloading CD-ROM ISOs and rendering chaos theory formulas while simultaneously instant messaging and posting on FaceBook what you ate... but in reality, what did you create?"
- DieHard, random forum troll at macos9lives.com

Offline Syntho

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 1119
Re: Mac turning on by itself?
« Reply #17 on: September 22, 2019, 06:08:08 PM »
When you said PSU I thought you meant that there's a button on the PSU (Power Supply Unit). I'll get to trying this and see if I come up with anything. The last time I did a CUDA reset was a couple years back when I got all of my 9600s perfected.

Offline Syntho

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 1119
Re: Mac turning on by itself?
« Reply #18 on: October 03, 2019, 10:33:44 PM »
I finally got around to resetting CUDA by using that little button, and while I was at it I reset the motherboard by removing the battery and power cycling it. All was fine for a few hours, then whammo, my Mac turned itself on again. Once again, every time I click Shut Down, it turns right back on like I'm hitting Reset.

So far I've reset the PRAM, reset CUDA, as well as the motherboard, plus started off with a fresh OS install to see if that would fix the power management extensions. Nothing worked.

Maybe there's something funny going on with the ADB port or keyboard I'm using since there's a power button on it. I'll do some experimentation and see what happens.

Offline Syntho

  • Platinum Member (500+ Posts)
  • *****
  • Posts: 1119
Re: Mac turning on by itself?
« Reply #19 on: October 07, 2019, 05:40:14 AM »
I think this is an ADB issue after all. I unplugged the ADB cable and for two days now it hasnít started by itself.