DazzaG

Q: 24" iMac Screen Freezes since 10.6.3 update - pls help!

I don't know if this is just coincidence or not, but since updating my iMac to 10.6.3 it keeps on crashing. On 3 separate occasions today, whilst using my Mac the screen has gone completely black with thin white lines down it.....see pic below:

http://picasaweb.google.com/lh/photo/6SYzhCgVYEU5TBKqRfOQ1Q?feat=directlink

The fans and hard disk are still running but it will not respond to any keyboard or mouse presses - I simply have to turn it off by holding the power button in.
It will then restart as usual.

Anyone got any ideas? Do you think that if I was to re-install Mac OS X from my original install disk it could solve the issue?

Thanks

Darren

24" intel imac 2.8Ghz, Mac OS X (10.6.3)

Posted on Mar 31, 2010 2:43 PM

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Q: 24" iMac Screen Freezes since 10.6.3 update - pls help!

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  • by Luis A. Vizzotto,

    Luis A. Vizzotto Luis A. Vizzotto Sep 3, 2011 8:50 AM in response to nekosaur
    Level 1 (0 points)
    Sep 3, 2011 8:50 AM in response to nekosaur
    BTW - if anybody wants the 10.6.2 drivers for a 21" 2.0Ghz Core2Duo Intel iMac (7,1) using the ATI RadeonHD 2400 / 128MB Graphics card let me know - the whole 10.6.2 ATI driver set is only about 3MB.

     

     

    In January you've made this offer to whom might be interested in the 10.6.2 drivers to perform the KrzysiuTurek solution to the freezes. I have the exact same iMac as you and the exact same problems when trying to upgrade to 10.6.3. The question is I'm upgrading from Leopard and the Snow Leopard installation disk I have is already version 10.6.3. So i don't have the driver files from 10.6.2. Would you happen to still have those files ? If so, could you send them to me ?

     

    Thanks

  • by swmaster,

    swmaster swmaster Sep 3, 2011 11:39 AM in response to Luis A. Vizzotto
    Level 1 (0 points)
    Sep 3, 2011 11:39 AM in response to Luis A. Vizzotto

    i have them, post me a mail address so i can mail them to you.

  • by Luis A. Vizzotto,

    Luis A. Vizzotto Luis A. Vizzotto Sep 3, 2011 2:05 PM in response to swmaster
    Level 1 (0 points)
    Sep 3, 2011 2:05 PM in response to swmaster

    Thanks swmaster. My e-mail is lvizzotto@me.com.

     

    I'm going to try KrzysiuTurek's solution on an external hard drive to preserve my data in internal HD. Do you think anything could go wrong in the process by the fact it's done in external hd ?

  • by CW3X,

    CW3X CW3X Sep 6, 2011 12:16 PM in response to TK111
    Level 1 (5 points)
    Sep 6, 2011 12:16 PM in response to TK111

    TK111, I have AppleCare on the same iMac. How did you convince Apple to give you a new CPU? They just want me to run through the checklist every time I call.

  • by TK111,

    TK111 TK111 Sep 6, 2011 12:51 PM in response to CW3X
    Level 1 (0 points)
    Sep 6, 2011 12:51 PM in response to CW3X

    CW3X: I documented every freeze I had for about eight months, documented the results I had with the kext fix, etc. Previous to getting my iMac's GPU replaced I had taken it into the Apple store with the same problems, and they ran hardware tests with no problem found. A few months later, after increasingly frequent freezes and more documentation, I brought it in again with a strenuous complaint, and they replaced the GPU.

     

    It's interesting that although the kext fixes worked previously, with a new GPU, Snow Leopard and Lion both worked without the kext fix, no freezes now for two months. So, one could conclude that, at least in my case , it did have something to do with a hardware problem. Most of these iMacs are out of warranty by now, it seems, and tough luck for them, I guess, according to Apple. Even with yours under warranty, who knows if they'll give you a new GPU.

  • by TK111,

    TK111 TK111 Sep 6, 2011 12:53 PM in response to TK111
    Level 1 (0 points)
    Sep 6, 2011 12:53 PM in response to TK111

    P.S., that's GPU, not CPU as in your note.

  • by schleppy,

    schleppy schleppy Sep 8, 2011 11:39 AM in response to DazzaG
    Level 1 (95 points)
    Sep 8, 2011 11:39 AM in response to DazzaG

    I have an iMac 7,1 (2007) with the Radeon HD2400. I tried installing the 10.6.2 kexts, but i kept getting kernel panics at reboot. I read that you need to be booting the 64 bit kernel in order for the 10.6.2 kexts to work, but the iMac 7,1 is one of the models that can't boot the 64 bit kernel.


    Morpho, you seem to be the only person with an identical iMac to mine that got the 10.6.2 kexts working. Any tips?


    Thanks!

  • by tronnei,

    tronnei tronnei Sep 8, 2011 11:49 AM in response to schleppy
    Level 1 (5 points)
    Sep 8, 2011 11:49 AM in response to schleppy

    schleppy wrote:

     

    I have an iMac 7,1 (2007) with the Radeon HD2400. I tried installing the 10.6.2 kexts, but i kept getting kernel panics at reboot. I read that you need to be booting the 64 bit kernel in order for the 10.6.2 kexts to work, but the iMac 7,1 is one of the models that can't boot the 64 bit kernel.


    Morpho, you seem to be the only person with an identical iMac to mine that got the 10.6.2 kexts working. Any tips?


    Thanks!

     

    I have the same Mac. The kext fix works with Snow Leopard 10.6.7, but not 10.6.8, which will give you the kernel panics at startup you describe. Downgrade to 10.6.7 and you'll be fine.

     

    Not sure how (or if) the fix will work with Lion on that model.

  • by morpho,

    morpho morpho Sep 8, 2011 11:51 AM in response to schleppy
    Level 1 (0 points)
    Sep 8, 2011 11:51 AM in response to schleppy

    schleppy wrote:

     

    Morpho, you seem to be the only person with an identical iMac to mine that got the 10.6.2 kexts working. Any tips?


    Thanks!

     

    Keep your system at 10.6.7. That's the only viable solution on iMac7,1, even though you'll miss some critical security updates.

     

    Or jump on the Lion bandwagon if your workflow does not depend on TrueCrypt, Wuala, MacFUSE, VMware et al.

  • by schleppy,

    schleppy schleppy Sep 8, 2011 12:01 PM in response to morpho
    Level 1 (95 points)
    Sep 8, 2011 12:01 PM in response to morpho

    Damnit. Is there any way to roll back to 10.6.7? Or am I erasing this machine?

     

    Thanks Morpho!

  • by swmaster,

    swmaster swmaster Sep 8, 2011 12:18 PM in response to schleppy
    Level 1 (0 points)
    Sep 8, 2011 12:18 PM in response to schleppy

    Schleppy,

     

    you can do an install of the stock 10.6.0 w/o any big side effects just on the top of your current system.

    i did it a couple of times until i was able to figure out the kext fixing on my own.

     

    it's really like 1,2,3, boot from the original cd, choose install, next, next, finish.

    go have a cup of tea or watch a short movie, in 45-50 minutes your mac will be good as new,

    running 10.6.0.

     

    you basically don't lose your data, your apps, your settings remain as they are, then you can upgrade to 10.6.7 using the combo and then apply the kext fixes.

     

    oh, i forgot, you lose safari5 but it can be reinstalled once you are on 10.6.7.

  • by schleppy,

    schleppy schleppy Sep 8, 2011 12:21 PM in response to swmaster
    Level 1 (95 points)
    Sep 8, 2011 12:21 PM in response to swmaster

    I'll give that a go if the Apple store is unwilling to upgrade the graphics card.


    Thanks!!

  • by johnckendall,

    johnckendall johnckendall Sep 8, 2011 2:14 PM in response to swmaster
    Level 1 (9 points)
    iCloud
    Sep 8, 2011 2:14 PM in response to swmaster

    Getting a page not found trying to download the 10.6.7 combo update.  :-(

  • by TK111,

    TK111 TK111 Sep 8, 2011 2:43 PM in response to johnckendall
    Level 1 (0 points)
    Sep 8, 2011 2:43 PM in response to johnckendall

    johnckendall: I found it on apple.com   support   downloads   about ten pages in.

  • by johnckendall,

    johnckendall johnckendall Sep 9, 2011 8:22 AM in response to TK111
    Level 1 (9 points)
    iCloud
    Sep 9, 2011 8:22 AM in response to TK111

    Thanks, yeah, I had found it there but it wouldn't download (was returning the web page not found error).  However, later that night when I tried (around 8p edt) it showed up and I was able to get it.

     

    Unfortunately, after installing it and applying the kext's, no joy.  Still got freezes.  And my temps are all in the high 30's low 40's (celcius).

     

    Waiting on the 10.5 disks from my dad to come in the mail.  Figured it can't hurt to try that!

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