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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 W S H,

    W S H W S H Jul 28, 2011 6:12 AM in response to Chris J.
    Level 1 (5 points)
    Jul 28, 2011 6:12 AM in response to Chris J.

    Many thanks.  Hope your machine keeps singing.

  • by swmaster,

    swmaster swmaster Jul 28, 2011 6:13 AM in response to Chris J.
    Level 1 (0 points)
    Jul 28, 2011 6:13 AM in response to Chris J.

    Chris,

     

    could you please post the output of the following command (kextstat | grep ATI) to this thread just to check what version of kexts are you running. it should look something like this:

     

    cy-bear:~ swm$ kextstat | grep ATI

       76    2 0x12d1000  0x32000    0x31000    com.apple.kext.ATISupport (6.2.6) <75 14 13 7 5 4 3 1>

       77    0 0x1303000  0x23000    0x22000    com.apple.kext.ATI1600Controller (6.2.6) <76 75 14 13 5 4 3 1>

       92    0 0x948000   0x5b000    0x5a000    com.apple.ATIRadeonX1000 (6.2.6) <78 75 13 7 6 5 4 3 1>

      110    0 0x1326000  0x13000    0x12000    com.apple.kext.ATIFramebuffer (6.2.6) <76 75 14 13 7 5 4 3 1>

     

    btw, that's a white 20" intel imac4,1 running stock 10.6.7 w/o any side effects. i will replace the core duo w/ a core2duo soon to get it lion-aware.

     

    my guess is that you still use the original lion drivers from the kext cache.

     

    my other 20" alu imac7,1/2400XT still runs the untouched lion pretty stable, since the last freeze happened last friday.

  • by Chris J.,

    Chris J. Chris J. Jul 28, 2011 7:03 AM in response to swmaster
    Level 1 (30 points)
    Jul 28, 2011 7:03 AM in response to swmaster

       2 0xffffff7f813b6000 0x45000    0x45000    com.apple.kext.ATISupport (6.0.6) <77 9 8 7 5 4 3 1>

       0 0xffffff7f816fd000 0xca000    0xca000    com.apple.kext.ATI2400Controller (6.0.6) <91 77 9 8 5 4 3 1>

       0 0xffffff7f816e6000 0x12000    0x12000    com.apple.kext.ATIFramebuffer (6.0.6) <91 77 9 8 7 5 4 3 1>

     

    Here ya go! Hope it helps!

  • by johnckendall,

    johnckendall johnckendall Jul 28, 2011 7:20 AM in response to Chris J.
    Level 1 (9 points)
    iCloud
    Jul 28, 2011 7:20 AM in response to Chris J.

    Dude, where did you get 6.0.6 version from?  Any way you can make those available?

     

    And why does the System Info app show 7.2.9 but that command shows 7.0.2 ?

     

    MrFreeze:~ johnk$ kextstat | grep ATI

       88    2 0xffffff7f813e3000 0x186000   0x186000   com.apple.kext.ATISupport (7.0.2) <75 9 8 7 5 4 3 1>

       89    0 0xffffff7f8186b000 0x40000    0x40000    com.apple.kext.ATI2600Controller (7.0.2) <88 75 9 8 5 4 3 1>

       91    0 0xffffff7f81569000 0x25f000   0x25f000   com.apple.ATIRadeonX2000 (7.0.2) <90 75 9 7 6 5 4 3 1>

       96    0 0xffffff7f81854000 0x12000    0x12000    com.apple.kext.ATIFramebuffer (7.0.2) <88 75 9 8 7 5 4 3 1>

     

    Message was edited by: johnckendall

  • by Chris J.,

    Chris J. Chris J. Jul 28, 2011 7:21 AM in response to johnckendall
    Level 1 (30 points)
    Jul 28, 2011 7:21 AM in response to johnckendall

    Man I have no idea.  Wish I could tell you!  Im am not sure if I can make them available or not.  If someone has ideas on how to then I would be glad to

  • by Chris J.,

    Chris J. Chris J. Jul 28, 2011 7:24 AM in response to johnckendall
    Level 1 (30 points)
    Jul 28, 2011 7:24 AM in response to johnckendall

    That is strange yours is showing up like that

  • by johnckendall,

    johnckendall johnckendall Jul 28, 2011 7:25 AM in response to Chris J.
    Level 1 (9 points)
    iCloud
    Jul 28, 2011 7:25 AM in response to Chris J.

    If its not too much trouble, could you email them to mrfreeze@kendallspace.net ?

     

    Thanks!

    jck

  • by Chris J.,

    Chris J. Chris J. Jul 28, 2011 7:27 AM in response to johnckendall
    Level 1 (30 points)
    Jul 28, 2011 7:27 AM in response to johnckendall

    Just sent them

  • by johnckendall,

    johnckendall johnckendall Jul 28, 2011 7:29 AM in response to Chris J.
    Level 1 (9 points)
    iCloud
    Jul 28, 2011 7:29 AM in response to Chris J.

    Got em.  You the man!  I'll let you know if they help

  • by Chris J.,

    Chris J. Chris J. Jul 28, 2011 7:38 AM in response to johnckendall
    Level 1 (30 points)
    Jul 28, 2011 7:38 AM in response to johnckendall

    No problem and I HOPE THEY WORK FOR YOU....I got a feeling if they work I may be sending out numerous emails! 

  • by swmaster,

    swmaster swmaster Jul 28, 2011 4:26 PM in response to Chris J.
    Level 1 (0 points)
    Jul 28, 2011 4:26 PM in response to Chris J.

    i can confirm, you really run the old ones.

     

    this is what i will try right now. i've got them 10.6.2 kexts at hand :-)

    my imac7,1 freezed 4 times today, had to reboot it from ssh. once i wasn't even able to click on my head to log in after restart. got GPU debug info all the time to the log.

  • by Chris J.,

    Chris J. Chris J. Jul 28, 2011 6:58 PM in response to swmaster
    Level 1 (30 points)
    Jul 28, 2011 6:58 PM in response to swmaster

    Yea they are old ones but the work. Good luck to you on it. Keep us updated.

  • by bumina,

    bumina bumina Jul 28, 2011 8:17 PM in response to Harkaitz
    Level 1 (0 points)
    Jul 28, 2011 8:17 PM in response to Harkaitz

    Harkaitz wrote:

     

    Just installed on an imac 7.1 with 2600pro and working with 10.6.2 Kexts.

     

    There was a user having problems with the patch but on my 7.1 never failed (even on lion betas).

    That user was me!  Maybe the ATI 2600 works in Lion but the 2400 is still busted?  Can anyone confirm this?  It would be super awesome if everything is fixed except for my particular machine with my particular graphics card.  Of course by super awesome I mean terrible.

  • by swmaster,

    swmaster swmaster Jul 29, 2011 12:19 AM in response to bumina
    Level 1 (0 points)
    Jul 29, 2011 12:19 AM in response to bumina

    Bumina,

     

    mine is imac7,1 with HD2400xt.

    i installed the good old 10.6.2 drivers 8 hours ago.

    they work - that means, OSX was able to load them despite the fact they are originally meant for 10.6.

     

    crowley:Desktop swm$ kextstat | grep ATI

       92    2 0xffffff7f813a8000 0x45000    0x45000    com.apple.kext.ATISupport (6.0.6) <77 9 8 7 5 4 3 1>

       93    0 0xffffff7f816ef000 0xca000    0xca000    com.apple.kext.ATI2400Controller (6.0.6) <92 77 9 8 5 4 3 1>

       95    0 0xffffff7f813ed000 0x25f000   0x25f000   com.apple.ATIRadeonX2000 (7.0.2) <94 77 9 7 6 5 4 3 1>

      100    0 0xffffff7f816d8000 0x12000    0x12000    com.apple.kext.ATIFramebuffer (6.0.6) <92 77 9 8 7 5 4 3 1>

     

    there is one thing i missed, i forgot to replace the ATIRadeonX2000.kext with the old version, so as you see this one is from lion (ver. 7.0.2).

     

    we'll see how it performs. yesterday evening i had 4 gpu freezes in 2 hours w/ the original Lion drivers. once i wasn't able to get to press enter after i typed in my password on the login screen.

    well, at that point my mind just blown up.

     

    NOTE TO EVERYONE:

    save the original lion kexts to a safe location for the case anything could go wrong.

    if you replace the lion ones w/ the 10.6.2 kexts, be sure to remove all extended attributes from them, or OSX will ignore them and you will be sitting next to a blacked out imac. and make sure they are owned by root:wheel

    it goes like this:

     

    $ sudo sh

    # cd /System/Libraries/Extensions

    # chown -R root:wheel ATI*

    # xattr -dr ATI*

     

    it is done in a fraction of seconds.

    then just wait for 2-3 minutes for kexthelper to automatically rebuild the kernelcaches in the background.

  • by kremik,

    kremik kremik Jul 29, 2011 1:48 AM in response to swmaster
    Level 1 (0 points)
    Jul 29, 2011 1:48 AM in response to swmaster

    Hello,

     

    I have a 7,1 iMac with with ATI2400. I had many freezes in Snow Leopard so I did the kext replace and used 10.6.7 with 10.6.2 kexts without any problem. Then I decided to upgrade to 10.6.8 and try not to replace kexts. I seemed as OK, I didn't have any freeze for 2 days. But after two days I've got a freeze 2x - 3x per day. I didn't do 10.6.2 replace and I waited for Lion. The scenario with Lion was the same - no freeze for 2 days and then 2 or 3 per day (well Lion saves the state, so after restart I didn't loose all my work).

     

    Yesterday I replaced kexts in Lion with 10.6.2 ones and it seems to work without any problem. The output of kextstat | grep ATI is the same as swmaster posted. I just wonder if it is required to replace com.apple.ATIRadeonX2000 (7.0.2) with older version too?

     

    According to the previous experience it's to early to judge if the kext replace works or not. I will let you know.

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