G4 Starting Up On It's Own

Discussion in 'Macintosh Computers' started by A.T., May 11, 2004.

  1. macrumors newbie

    Joined:
    May 11, 2004
    Location:
    Sydney, Australia
    #1
    Hi, I was wondering if anyone can help me. I have a G4 and 17' flat panel display and recently whenever I shut down, I'll come home and find it has restarted on it's own. I do usually just put it to sleep, but like to shut it down as well.

    Cheers.

    A.T.
     
  2. macrumors 6502a

    Juventuz

    Joined:
    Dec 4, 2002
    Location:
    Binghamton
    #2
    Not to be mean but... you're sure you're chosing Shut Down and not Restart?

    Don't laugh because I had a friend that was doing it.
     
  3. macrumors member

    Joined:
    May 11, 2004
    #3
    lol, both @ topic and answer!

    I have a g4 dual 1.25, it never started on it's own (thank god)
     
  4. macrumors 65816

    krimson

    Joined:
    Oct 29, 2003
    Location:
    Democratic People's Republic of Kalifornia
    #4
    i had a similar problem a few weeks ago... i couldn't shut down, no matter what I did.

    What caused my problem was that the power cable for my printer was unplugged, but the USB cable was still plugged in. It's strange, but after I plugged the printer back in... problem solved.

    Unplug all your firewire and usb devices and see if that helps. (As someone here suggested to me)
     
  5. macrumors 6502

    encro

    Joined:
    May 6, 2002
    Location:
    bendigo.victoria.au
    #5
    If you have OS X 10.3 do you have an automatic startup time set in the Energy Saver .prefPane in System Preferences? It's under the 'Schedule Tab'

    Have you installed 'iBeeZee', 'Koingo's Alarm Clock Pro' or 'iRooster'?
     
  6. macrumors 65816

    Joined:
    Apr 28, 2004
    #6
    i have my computer setup to turn on every day at 11 and shut down and 1 am, you might want to check the startup settings in your system preferences.
     
  7. macrumors 603

    whooleytoo

    Joined:
    Aug 2, 2002
    Location:
    Cork, Ireland.
    #7
    As others have pointed out, it could be a scheduled startup - look in the Energy Saver preference pane. There's also an option there for the Power button to put the iMac to sleep rather than power down, might that be what you're doing?

    Also, what USB devices do you have plugged in? Apple removed the power button on the keyboards due to a bug where some powered USB devices (the iSub springs to mind) could cause the machine to startup while attached.
     
  8. macrumors newbie

    Joined:
    May 6, 2004
    #8
    I don't know if the iBook you have is like mine, but I can just take the battery out. It cant start up without any power
     
  9. macrumors G5

    Sun Baked

    Joined:
    May 19, 2002
    #9
    Did you try disabling the "Touch Switch" on the LCD display?

    Some of those are sensitive enough to randomly start/shutdown the machine with nobody in the room.
     
  10. macrumors 6502a

    Juventuz

    Joined:
    Dec 4, 2002
    Location:
    Binghamton
    #10
    Hey it's true... for about 3 days he was rebooting his machine.

    My roommate in college had a mac, don't remember which one it was back in 95, and we could turn his on with the tv remote.
     
  11. macrumors 6502a

    JOD8FY

    Joined:
    Mar 22, 2004
    Location:
    United States
    #11
    Wow, a posessed mac! Have you installed any software updates recently...? I guess Apple must have tried to implement their "think different" idea into their computers! :D

    JOD8FY
     
  12. macrumors 603

    whooleytoo

    Joined:
    Aug 2, 2002
    Location:
    Cork, Ireland.
    #12
    His isn't the only one!

    I have an IR received with my iMac for playing CDs and DVDs, but it picks up my TV remote's signals and beeps and wakes from sleep randomly.

    Even funnier, I noticed my iMac doing strange things (apps launching etc) at random intervals even when I wasn't using the TV remote. I only figured out what was happening when someone on TV shouted the line: "We don't have the time!!" and the iMac replied "It's nine fifteen"!! (I'd left speech recognition turned on!)
     
  13. thread starter macrumors newbie

    Joined:
    May 11, 2004
    Location:
    Sydney, Australia
    #13
    Thanks guys for the solutions. After doing a bit of searching I found a related post on the Apple discussions website and a solution :

    (quote)
    "For some reason, at shutdown some USB-connected printers seem to send (or reflect) a signal via USB to the Mac which it interprets as a boot command - similar to what a power button on a keyboard would send. This may happen only at the moment the USB bus is de-powered at shutdown - but is enough to cause the Mac to auto-reboot.

    This seems to happen more if the printer is connected to the keyboard. Relatedly -
    Article #58649 - Apple Pro Keyboard: Devices Connected

    One solution is to disconnect the printer before shutting down the Mac.

    Another can be to use a self-powered USB hub between the printer and the Mac - such can sometimes filter out that signal. Some self-powered hubs have a small selector switch on the side or back, which allows them to be set to use bus power or self-power; that should not be set to bus."

    Hope someone else finds this useful.

    A.T.
    :)
     
  14. macrumors 68040

    Koodauw

    Joined:
    Nov 17, 2003
    Location:
    Madison
    #14
    Humm that is very interesting about the USB printers doing that. Very interesting. Weird too. I was going to suggest poltergeist.
     

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