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Freezing iMacs

53866 Views 694 Replies Latest reply: Nov 4, 2007 3:10 PM by FrustratedWithVista RSS
  • Marc Poirier Calculating status...
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    Nov 3, 2007 11:26 AM (in response to mystictheurge)
    Leopard & the 1.3 update seem to have found the weak spot in my iMac... I went from 15-20 freezes with tiger and the 1.1update to 3-5 freezes with tiger and revert to 1.0... and to 0 with Leopard and the 1.3 update... My only problem so far, which I'll address Apple next week is the artifacts and the screen fading to black once in a while in Front Row...

    So I guess my problem was not hardware related..
    Silver IMac, 24", 2.8ghz Extreme, 2g RAM, 500g HD, Mac OS X (10.4.10), Laptop powerbook G4 1,67ghz, 1g ram, 17"
  • Rick Bargerhuff Level 1 Level 1 (5 points)
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    Nov 3, 2007 12:16 PM (in response to Marc Poirier)
    Well,

    I woke up today and the iMac was working fine. No crash. Right now, I'm tying my best to crash the IMac and it's handling everything like a champ with Tiger iMac Software Update v1.2 update...

    Running 1 1920 x 1080 Quicktime movie on Loop while another movie plays next to it, also on loop. both at 24FPS.

    iTunes visualizer on, set to Large, not full screen playing tracks

    Dashboard up.

    CPU usage at 75%, GPU temp at 57°, GPU diode at 60°, GPU heat sink at 56°

    Not much more I can do.

    Seems my machine is cured. For those still having problems in TIGER, you're machine's issue may be more serious and software may not fix it. Or, your machine needs a software update tailored to you specific issue.

    Those in Leopard, it may take a bit more time. IE, TIger was finely tuned, so any problems that show up with an iMac update, are obviously the iMac update. But with Leopard, it's new and there are 2 things for Apple to trouble shoot.

    Keep the faith! It'll get worked out.
    iMac 24" 2.4 GHz Intel Core 2 Duo, Mac OS X (10.4.10)
  • rpduval Level 1 Level 1 (50 points)
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    Nov 3, 2007 12:27 PM (in response to mystictheurge)
    mystictheurge wrote:

    Just out of curiosity, there are "stable" aluminium imacs, right?


    The majority are stable. You have to figure that this'd be all over the news if it affected a 'significant' percentage of the new iMacs. It hasn't hit any non-tech news outlet yet.
    24" 2.4GHz alumiMac 3/320, Mac OS X (10.4.10), DP 1GHz G4 MDD, 14" iBook G4, 12" iBook G3, 15" Toshiba POS
  • mystictheurge Calculating status...
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    Nov 3, 2007 2:21 PM (in response to rpduval)
    For the people who are still having freezing issues even after the 1.2/1.3 update, do you guys still get the *ASIC Hang Log* entries in the console when you reboot the machine? Would be nice to know if it is in fact the same issue as before, or a different one entirely.
    iMac 2.4ghz Core 2 Duo 20"
  • damibro Calculating status...
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    Nov 3, 2007 2:48 PM (in response to rpduval)
  • rpduval Level 1 Level 1 (50 points)
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    Nov 3, 2007 3:16 PM (in response to damibro)
    We're famous lol!

    Hopefully they'll pinpoint the problem soon. Obviously they (Apple) thought it was a s/w issue, maybe they'll look at the hardware now?
    24" 2.4GHz alumiMac 3/320, Mac OS X (10.4.10), DP 1GHz G4 MDD, 14" iBook G4, 12" iBook G3, 15" Toshiba POS
  • David Carlin Level 1 Level 1 (45 points)
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    Nov 3, 2007 4:03 PM (in response to autiger)
    I finally figured out a way to reliably induce 'freezing' on my imac! I know other have found various ways (cover flow, dock, arabesque screen saver, etc..) but none of them triggered it for me.

    Normally my machine freezes maybe once or twice a day. The geniuses at the apple store said they needed to actually see it happen. What I do is run the apple hardware test included on DVD #1 with your imac. I run the extended test, but I also put it into 'loop' mode by pressing Command-L. Let it run for a while and the system will get nice and toasty. Afterwards, I can't run leopard for more than a few seconds before it freezes. I can't believe I'm happy I've discovered a way to break my system, but when I go back to the Genius Bar tomorrow hopefully I'll be able to demonstrate the problem for them!
    2.4Ghz 24" iMac, Mac OS X (10.5)
  • rpduval Level 1 Level 1 (50 points)
    Currently Being Moderated
    Nov 3, 2007 4:11 PM (in response to autiger)
    I don't really want to go back through 40-something pages to find this so maybe someone can help me: I read earlier in the thread about a fan speed control program, can someone point me at it? Also, what is best program for finding/showing temps?
    24" 2.4GHz alumiMac 3/320, Mac OS X (10.4.10), DP 1GHz G4 MDD, 14" iBook G4, 12" iBook G3, 15" Toshiba POS
  • David Carlin Level 1 Level 1 (45 points)
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    Nov 3, 2007 4:15 PM (in response to rpduval)
    For controlling the fans, use smcFanControl

    For showing the temps one option is iStat Pro (a Dashboard Widget)

    http://www.conscius.de/~eidac/index.html
    http://www.islayer.com/index.php?op=item&id=7
    Mac OS X (10.5)
  • CONVERT_TO_MAC Calculating status...
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    Nov 3, 2007 5:06 PM (in response to autiger)
    This may help.

    I have been struggling with my imac freezing ever since i purchased it 5 days ago.
    I have reinstalled the operating system 3 times with the same results.
    Constant and unpredictable system lock up's.

    I have been updating the imac with all the suggested software upgrades
    firstly with tiger (included the 1.1 and 1.2 updates) and lastly with leopard with 1.3 update

    every time after the upgrades i am left with a completely unstable operating system

    I finally decided to go back to basics, and reinstall tiger and apps, and DID NOT install
    the upgrade patches suggested by apple.

    I upgraded to leopard and DID NOT install the 1.3 software upgrade.

    And as of today the machine has not frozen at all and is stable.

    I am still going to ring apple support and complain about my problems, because
    I believe that the software patches should be applied, but am not willing to do so
    and end up with a useless computer.

    Hope above helps those in a similar position.

    ps. Im a PC user switching to a Mac and have never come across such an unstable
    system. I only hope that my confidence is restored over the next few weeks.
    IMAC INTEL 24" EXTREME, Mac OS X (10.5), 3 GIG MEMORY EXTERNAL LACIE DRIVE
  • DreamsPower Calculating status...
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    Nov 3, 2007 5:22 PM (in response to CONVERT_TO_MAC)
    Just to know... this "fix" is stable even if You let run a Leopard screensaver e.g. (Shell or Arabesque) and also using Time Machine?
    Thanks
    iMac, Mac OS X (10.5)
  • Fix.My.Mac Calculating status...
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    Nov 3, 2007 5:29 PM (in response to autiger)
    I applied the 1.2 update to Tiger last night and it's made the freezing issue even worse. It's locking up constantly.

    This is my first Mac, having been a long time PC user. I must say that I am very disappointed right now. I can't afford the time and money this problem is costing me.

    Perhaps it's time for a recall Apple. NOW, not a month down the road. It's what I always feared being locked into a single vendor and one of the reasons I didn't switch earlier. At least with my PC I could just go out and buy a new video card or whatever and fix it myself if I needed to.
    Aluminum iMac 24" 2.4, Mac OS X (10.4.10)
  • rpduval Level 1 Level 1 (50 points)
    Currently Being Moderated
    Nov 3, 2007 5:41 PM (in response to Fix.My.Mac)
    Fix.My.Mac wrote:
    At least with my PC I could just go out and buy a new video card or whatever and fix it myself if I needed to.


    You'd have to - God knows Microsloth or Dell wouldn't bother to help.

    In the future would all 'switchers' please refrain from wishing for their Windoze machines back? Please? If you really don't want to be here with us Mac users, by all means go ahead and 'switch' back.

    To stay on topic, I've had WoW running all day, not a single problem = no freezes. I think I'll try upgrading to Leopard tomorrow after I back up the HD.
    24" 2.4GHz alumiMac 3/320, Mac OS X (10.4.10), DP 1GHz G4 MDD, 14" iBook G4, 12" iBook G3, 15" Toshiba POS
  • misterbrain Calculating status...
    Currently Being Moderated
    Nov 3, 2007 6:00 PM (in response to DreamsPower)
    Sorry I don't think that this "fix" will help - at least not everyone.

    With a clean install (even no external devices attached) and not applying the update I constantly had freezes. Quite often when I opened time machine.

    Since the Update 1.3 the system is running better. Time-machine or the screensavers didn't freeze my imac. I nearly thought that the problem is solved now. Even Logic Studio was running without any problem ... since a few hours ago when the System was frozen again when I was browsing loops in Logic.

    I am really frustrated because for the last 3 years I had no problem with apple systems. Maybe the best thing is to call apple to have your iMac replaced / repaired. But I still don't know if there is a hardware or software problem with our freezing machines. I am hoping / waiting for the next update that isn't just a driver update - maybe a firmware update could help?
    Alu iMac 24" Intel Core 2 Extreme; 750GB HD; 4 GB RAM, Mac OS X (10.5)
  • Fix.My.Mac Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 3, 2007 6:02 PM (in response to rpduval)
    rpduval wrote:
    Fix.My.Mac wrote:
    At least with my PC I could just go out and buy a new video card or whatever and fix it myself if I needed to.


    You'd have to - God knows Microsloth or Dell wouldn't bother to help.

    In the future would all 'switchers' please refrain from wishing for their Windoze machines back? Please? If you really don't want to be here with us Mac users, by all means go ahead and 'switch' back.


    I wasn't really wanting my windows machine back, I'm just wanting Mac that works, thats all. I've had it for 2 months and now I am starting to get frustrated with the whole experience. It's not what I expected.
    Aluminum iMac 24" 2.4, Mac OS X (10.4.10)

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