Software :: G5 Will Not Sleep / Shutdown - Fans Spin Up
Sep 10, 2009
I have a G5 that is about 5 years old. For some reason it will not sleep or shutdown. When I try to do either one of those actions it does simi-sleep/shut down, but not completely. By that I mean it sounds like the hard drive spins down but then fans still are running. After about two minutes the fans spin way up and the Mac won't start back up. I have to pull the power on my battery backup. I took it to the shop (Not an apple store) and they reinstalled the OS for me and put some new ram in. Supposedly they "Fixed' the problem.
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Jun 17, 2012
I noticed that on my macbook pro retina, i never heard the fans spin up.
I tried Prime95 to stress the CPU, temperature went up to 98°c and the fans stayed at about 2000rpm... I immediately stopped to avoid damages.
Info:
MacBook Pro with Retina display, Mac OS X (10.7.3)
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Dec 2, 2010
I was noticing a lot of slow-down while playing computer games on my MBP. My computer far exceeds the minimum requirements for everything, so I reckoned it must have been something other than a slow processor (2.53 GHz Core 2 Duo), low ram (4 GB) or a completely inadequate graphics card (Nvidia 9400M). The games range from 'Day of Defeat: Source' to the 8 year-old 'Return to Castle Wolfenstein'. After a bit of research, I came to realise that my exhaust fan is never speeding up past 2005 RPM no matter WHAT the load on the CPU is. To test this, I downloaded smcFanControl and ran CPUTest. As the CPU went from 50*C to 95*C, there was hardly any change in the fan's speed. The variation went between 1995 and 2005 RPM.
In order to keep the computer relatively cool when playing games or doing anything that is CPU-heavy, I have to manually increase the fan's RPM in smcFanControl. I find that setting the fans to the maximum, 6000 RPM, keeps the computer cool enough to process these games. This program works wonders and I've not had any slow-down in games as a result. However, I am worried that there might be something wrong with my Mac. Why does it not automatically increase fan speed when reaching higher temperatures? I've even reset my SMC (SHIFT-CONTROL-OPTION-Power) on start-up just to be sure I've tried everything. Any suggestions as to why my fan seems stuck at 2000 RPM?
MBP, 13-inch, 4GB RAM, 2.53 GHz
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Aug 17, 2009
I got a new macbook black that is not covered under warranty, the magsafe fried on it and it used to boot up but not charge the battery or show any signs of power from the magsafe so then I bought a new magsafe that connects to the logic board and replaced it and when I plugged the power adapter in it tried to turn on right away and then the fan spinned and the sleep light light up then it shut off right away and I didn't smell nothing from the macbook or logic board. The battery now charges and the light on the magsafe adapter lights up so I tried to turn it back on and it doesn't the same thing turns on and then right off just the fan spins and then the hdds spin lasts for like a sec or two. I tried to turn it on with the battery out and with just the battery in nothing swapped the RAM same thing went from two 1 gig sticks to 2 256mb sticks and then tried another two 2gig sticks same thing then I tried a different hdd and have the same thing happen? What I need to do to get this working and yes I tried a google search and every1 ended up taking it to apple and I cannot do that.
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Mar 30, 2012
I have brought a new iMac 27'' the i5 model. I have noticed that the fans never change speed no matter how hot my processor gets ? Is this normal ? I have ran prime 95 and istat pro to check the temps and fan speeds. Nothing changes apart from the temperature.
Info:
iMac, Mac OS X (10.7.3)
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Sep 7, 2010
Over the past few weeks my blackbook has been shutting down more and more frequently from what I can only believe is overheating. I just checked my computer upon startup with SMC fan control - it starts up at about 70 C and at about 3500 RPM. Yet, after a few minutes, the fan immediately drops down to 1100 RPM or and fluctuates between 800-1400. I try to force the fans to spin with SMC Fan control, but nothing happens. I've looked all over the web and I can't find anything definitive. I know that macbooks tend to overheat. What can I do? I'm at college and I really need to find a fix for this as soon as possible.
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Apr 10, 2009
i have a 2.4 ghz alum macbook and i was wondering at what temperatures does your fans start to actually spin up. i'm at 70C right now and it still hovers at +/- 2000 rpm just wondering if this is normal i used smc fan controller for a little bit but i decided that i would just leave it to apples default and use a laptop cooler if i really need the extra disccipation.
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Jan 1, 2011
Sometimes when I put the display to sleep, my imac's fans will spin really fast until I restart the computer.
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Feb 26, 2008
Occasionally, my Mac Pro's (8-core early 2008) fans will go to full speed after a shut down. I did the procedure of unplugging everything and letting it sit for 15 mins, and that seemed to work for a day or 2...but last night the problem was back. The only solution is to hold down the power switch for 10 seconds. I just reset PRAM -- we'll see if that has any effect.
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Oct 19, 2010
I bought an optibay clone and put it in my 2010 Macbook i5. I have an SSD residing in my standard hard drive bay (because of potential hibernate issues) and the 5400rpm Apple drive + optibay clone in the Superdrive bay. How do I sleep/spin down the 5400rpm drive ? Unmounting doesn't seem to help. Put disk to sleep option in preferences is selected, but it keeps spinning and spinning. What options do we have for sleeping/spinning down this drive within OSX ?
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May 21, 2012
I have Snow Leopard (10.6.8) installed on a solid state drive (SSD). I'm wondering how I can check whether my internal hard drive is spinning or asleep. Is there a diagnostic to test whether a hard drive is spinning?
Info:
iMac (27-inch Mid 2010), Mac OS X (10.6.8), 12 GB RAM
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Apr 26, 2012
I can't quit, or force quit in finder. Beach-ball continues to spin and spin
Info:
iMac, Mac OS X (10.6.2)
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Jul 30, 2010
I've heard a few different point of views one this. I've heard its better to shut down because you won't be using energy then and not as much stress on component. I have also heard its better to sleep because of the energy required for boot and when you shut down and start up, the heating and cooling of the components make the contract and expand which will put stress on them. Power isn't one of my major concern, my major concern is which will make a Mac Pro last longer. With an SSD as the boot drive, it won't need as much power as a mechanical drive so I don't need to worry about that. Which is better? Also, which do you prefer?
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Jul 13, 2010
This problem just started happening on my 2005 Power Mac G5 Dual 2.3Ghz Processors.
I activate sleep, and it refuses to wake up again. Then after a few minutes the fans slowly increase in speed until the computer begins to sound like an aeroplane taking off, at which point I'm forced to perform a forced shutdown.
I've resetted the PMU and it doesn't seem to have worked. It is fully up-to-date in Software Update and is running the latest version of OS X Leopard.
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Mar 31, 2012
I've bought a brand new MPB 15'' about 2 days ago.
Every time I put it in sleep mode (by closing lid, or manually choose Sleep from menu) it goes to sleep (I check it by front indicator), but FANS STARTING TO ROTATE AT MAX SPEED (Sorry for CAPS)
I've already reseted the PRAM, reseted the SMC. Turn off any sharing. But that did not help.
Info:
MacBook Pro, Mac OS X (10.7.3)
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Jul 5, 2012
i purchased my new macbook air about two weeks ago and last night, i put my computer to sleep and noticed that the fans remained on. since then, ive reset the pram and the smc but it still keeps the fans on. i'm not sure if it should do this and i just didn't notice or if it's actually supposed to do that.
Info:
MacBook Air, Mac OS X (10.7.4)
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Feb 8, 2007
I have a MacPro 2.66 quad-core intel. 4gb ram. I have a hard-drive from my old Powermac that i upgraded to 10.5.5 for this computer. Everytime I put my computer to sleep, and then wake it back up. The fans spin up to maximum speed and all the fans are running really loud and then after about a minute all spin to normal speed.
I don't have any other flaws except for this. Why could this be?
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Mar 12, 2009
My newly fixed Powermac Quad has fans blasting when it goes to sleep. Is this a hardware or software issue?
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Nov 5, 2009
I have a 24" mid-2009 iMac, bought in June. It's behaving oddly over the past week or so. It fails to wake on sleep on the first attempt, but always succeeds on the second. When I say fails though, I mean that it *does* wake up, but goes back to sleep again after a few seconds. The other issue happened today, when I woke it up, in a cold room, the fans started up at full speed (I assume). It sounded terrifying to me as my iMac has never got that loud - not even playing games. I restarted it and it was the same, but died down after a while.
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Oct 1, 2010
I have a new MBP 13". When I'm using the Mac it's mostly connected to AC. Over night it's mostly sleeping without the AC connected. My question is, if I should let it sleep at night or should I shut down the Mac regarding to maximize the battery life?
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Jun 12, 2006
I am new to macs just got my first intel dua 20" iMac 3 months back and added a macbook pro last week. My questions is...Is there a way to shutdown or turn off the computer (iMac) with the Front Row remote either in front row or while back at the desktop. I keep my iMac in my bedroom and it serves as the computer as well as the dvd player/pvr/satellite receiver and I would love to be able to watch the directv or dvd and turn off the system without getting out of bed using the remote. It seems that Apple could ad a little icon at the bottom of the front row screen with a shutdown option or if someone created a small app that ran in the background so when you came to the desktop you could use the remote to shutdown the system.
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Mar 1, 2012
I have a Macbook (late 2011) 15" 2.2 i7 pro. I noticed this after upgrading my RAM with 2 x 4gb Corsair DDR3 1333MHZ Ram (stock 2 x 2gb)Upon closing the macbook lid, the computer would goto sleep (the pulsing heartbeat light would be on). The problem is, if the macbook was in sleep mode for an extended period of time (I've tested and something over 15 minuites) the computer would shutdown. I have tried searching for similar problems and unable to find something exactly the same. I have reset the SMC and PRAM but this problem is still there.Obviously it would sound like the RAM but I am having no problems doing anything with the mbp, the only thing is this sleep turned into shutdown problem.
Info:
MacBook Pro, Mac OS X (10.7.3)
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Dec 11, 2014
Choosing Sleep from the Apple menu often results in a complete shutdown. My UPS has a new battery and there are no scheduled events.
Mac Pro is early 2008, running Yosemite (10.10.1). 2 x 2.8 GHz Quad-Core Intel Xeon, 20 GB 800 MHz DDR2 FB-DIMM, ATI Radeon HD 2600 XT 256 MB.
Machine sleeps normally if Energy Saver scheduled items are set (computer, display, hard disks).
Info:
OS X Yosemite (10.10.1)
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Oct 9, 2005
I just bought a new dual 2.0 ghz power mac G5 about 2 weeks ago. I set everything up and dowloaded all the updates for everything, and then about a week into using it the problem started. I left for work and when I got home that evening after the computer had been asleep all day, it sounded like the computer was taking off from a runway. It would not respond at all to the keyboard or mouse so I had to shut it down by holding the power button on the front of the unit and then start it back up. I called tech support but they had me turn the option off that puts the harddrive to sleep when possible and then turn off my screensaver. Well it was fine again for about a week and then it happened agin yesterday, not once but twice. I looked on apple discussion boards and there is alot of this happening. Well I took one guy's advice that seemed to know what he was talking about. I restarted holding the command-option-o-f keys down, then prompted the computer to reset the v-ram, and two other things he suggested to reset that I cannot remember. Then I restarted, trashed the energy saver prefs and ran a repair disk permissions task inside OSX. Well that is where I am now, and it has not done it again, but I am still trying to find out what exactly is going on here. I just spent $2000 on a machine and it appears messed up and Mac has no answer.
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Nov 5, 2010
Mac's instruction manual for my MBP states if you are not going to use the computer for a couple of days or longer it is best to shut down. For people that use their computers everyday, is it best to but it to sleep when not in use or to shut down and unplug?
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Dec 15, 2010
I received my mba in the mail about two weeks ago, and since I have only shut it down twice. Once on a system update on the day I received it, and the other just five minutes ago. This last shutdown took a good 5 minutes, and I'm not exaggerating; 5 minutes, if not more. It took long enough for me to close the lid, went outside to smoke a cigarette, came back and the screen was still light blue with a "loading" animation toward the center bottom of the screen. I finally got tired of waiting and left it alone with it's lid closed and watched a program on hulu before checking it again. Then, it wouldn't turn on. I hit the power button and nothing. I held it down; nothing.
I had to hit the power button with my mba connected to the power source before it would turn on. The battery wasn't dead; it had over 90% left. But, when I did it again, the shutdown was instant...less than a second, and the boot up took less than 5 seconds. So, it got me thinking. My mba boots so fast, is it beneficial to always keep my mba on sleep? I can live with a 5 - 10 seconds wait before I get to use my computer. Does it hurt or decreases the lifespan if I shutdown and boot up on a daily basis? Which brings me back to the discussion I'd like to start on this thread....again for most of you. Shutdown or sleep? Which do you do, and why?
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Jun 18, 2009
Is it OK to leave the MB on sleep. On my previous Laptop I never shut it down unless it was necessary, im talking the computer never shutdown for like 2 or 3 weeks of use. Not continuous use, I use the laptop 3,4 maybe 5 times a day and its kinda hard for me to wait for the boot up, i usually just close it (sleep) and go away. Can I damage my MB doing that?
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Jan 17, 2010
I go to shut it down from the apple menu, it attempts to go through all the stages needed for a shut down, the screen goes black like normal, and then it restarts again (so, while, it nearly gets to the end of shut down, it never quite makes it, and starts up again!) The same thing happens when I decide to restart - there is no pause between shutting down and restarting, indicating that it does nor restart at all.
It does not sleep either. I put the lid down and everything is still going inside the laptop!
I hope that's a good enough explanation of what's happening!
The only way I can shut the computer down is by pressing the power button in the top right hand corner of my macbook - forcing a shut down.
I've tried resetting the PRAM and repairing disk utility but it has done absolutely nothing.
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Sep 1, 2014
I use sleep from Apple pulldown menu; after a while the computer wakes up, after a few minutes it shuts down. New iMac, 10.9.
Info:
iMac (27-inch, Late 2013), OS X Mavericks (10.9.4)
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Nov 21, 2010
my mac pro does a Improper shutdown on games and shutdown on sleep mode. I have made all the reset (PRAM and SMC). I run on OS10.6.5. I have tried two different video cards (8800GT and HD 4870) same crash here. The apple hardware test find nothing. So now I'm thinking that it's probably the power supply.
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