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 Matthew Yohe,

    Matthew Yohe Matthew Yohe Jun 23, 2011 8:41 PM in response to Tazthed
    Level 2 (180 points)
    Jun 23, 2011 8:41 PM in response to Tazthed

    Just installed... Of note, there was this line in the install log:

     

    Jun 23 22:11:15 localhost /System/Library/CoreServices/Software Update.app/Contents/MacOS/Software Update[60127]: PackageKit: Patching System/Library/Extensions/ATI2400Controller.kext/Contents/MacOS/ATI2400Controll er

     

    Along with the ATISupport and ATIFramebuffer...

  • by Eminemdrdre00,

    Eminemdrdre00 Eminemdrdre00 Jun 23, 2011 9:39 PM in response to Matthew Yohe
    Level 1 (0 points)
    Jun 23, 2011 9:39 PM in response to Matthew Yohe

    I just had my screen turn black and it froze 10.6.8 didn't fix the problem...back to the 10.6.2 kext files.

  • by Eminemdrdre00,

    Eminemdrdre00 Eminemdrdre00 Jun 23, 2011 11:25 PM in response to Eminemdrdre00
    Level 1 (0 points)
    Jun 23, 2011 11:25 PM in response to Eminemdrdre00

    Be careful... I got a kernal panic after installing the 10.6.2 kext files on 10.6.8. I just had to reinstall from my DVD, get the 10.6.7 combo update, and install the 10.6.2 kext files again. Let me know if you guys have any luck with 10.6.8 with our fix. I'm using the ATI2600 kext file.

  • by Tazthed,

    Tazthed Tazthed Jun 24, 2011 12:33 AM in response to DazzaG
    Level 1 (0 points)
    Jun 24, 2011 12:33 AM in response to DazzaG

    I installed the kext files on 10.6.7. I just updated to 10.6.8.

     

    1) Do you know if I have to install the kext files again ?

     

    2) And how do I see whether the kext files in the system now are from 10.6.7 or 10.6.8 ?

  • by morpho,

    morpho morpho Jun 24, 2011 11:06 AM in response to Eminemdrdre00
    Level 1 (0 points)
    Jun 24, 2011 11:06 AM in response to Eminemdrdre00

    Same here, the bug is still there (can be seen by just launching iTerm2 and watching its titlebar "flash" randomly) but the previous workaround causes a kernel panic on boot.

     

    DO NOT (and I mean it: DO NOT) replace the kexts on 10.6.8.

  • by Harkaitz,

    Harkaitz Harkaitz Jun 24, 2011 11:54 AM in response to morpho
    Level 1 (0 points)
    Jun 24, 2011 11:54 AM in response to morpho

    ***! Apple doesnt fix the problem, and screws our only way to work!

  • by Harkaitz,

    Harkaitz Harkaitz Jun 24, 2011 11:57 AM in response to morpho
    Level 1 (0 points)
    Jun 24, 2011 11:57 AM in response to morpho

    By the way, I´m pretty sure that this will screw the kext compatibility on Lion

  • by Tazthed,

    Tazthed Tazthed Jun 24, 2011 12:59 PM in response to morpho
    Level 1 (0 points)
    Jun 24, 2011 12:59 PM in response to morpho

    @morpho:

     

    I just tried iTerm2 with 10.6.8, but the titlebar doesn't "flash" on mine.

     

    Did you just update from 10.6.7 with the kext files to 10.6.8 or did you update to 10.6.8 from a version without the kext files trick ?

  • by morpho,

    morpho morpho Jun 24, 2011 2:11 PM in response to Tazthed
    Level 1 (0 points)
    Jun 24, 2011 2:11 PM in response to Tazthed

    @Tazthed:

     

    The "flash" happened just after iTerm2 started up, the bar went a bit darker than usual and I could clearly see a bright square area around each window button. Then it reverted back to normal almost immediately.

     

    As for the update, before installing the 10.6.8 Combo Update I took a full block-level backup with CCC (man, I owe the dev a beer. Or two), then I restored the ATI kexts shipped with 10.6.7 and applied the update. After booting I had the same exact problems, so I tried the usual switch to 10.6.2's kexts. I rebooted the system in verbose mode and I was greeted by a kernel panic in ATI2400Controller.kext.

     

    20 minutes and a system restore later I was back on 10.6.7 with old kexts and rebuilding dyld cache

     

    Message was edited by: morpho - a couple of typos here and there...

  • by Tazthed,

    Tazthed Tazthed Jun 24, 2011 2:58 PM in response to morpho
    Level 1 (0 points)
    Jun 24, 2011 2:58 PM in response to morpho

    @morpho:

     

    Okay thank you for the answer. I am on 10.6.8 now and I have not experienced any freezes (yet).

     

    First, I was on 10.6.7 with the old kext files from 10.6.2. Yesterday I updated to 10.6.8 without touching the kext files. Today I still don't have any freezes.

  • by Eminemdrdre00,

    Eminemdrdre00 Eminemdrdre00 Jun 24, 2011 5:41 PM in response to Tazthed
    Level 1 (0 points)
    Jun 24, 2011 5:41 PM in response to Tazthed

    You'll experience a freeze soon, unfortunately. And now we can't even use our kext fix on 10.6.8. I REALLY hope Lion is free from this issue. If not, what do we do?

  • by nekosaur,

    nekosaur nekosaur Jun 25, 2011 7:29 AM in response to Eminemdrdre00
    Level 1 (0 points)
    Jun 25, 2011 7:29 AM in response to Eminemdrdre00

    Same issue here - had no graphics / freezing issues for 1 full day after updating to 10.6.8 with Combo update.

    Waking iMac from sleep this morning triggered a full freeze with artifacts.

     

    Installed the 10.6.2 ATI drivers using the kext tool (what is this, the 4th time I've done this?) and was greeted with a heart-stopping MAJOR Kernel Panic at reboot.

     

    Obviously the OSX team has changed something significant with the drivers in 10.6.8 so that it breaks this process.

     

    Had to roll back to 10.6, upgrade to 10.6.7, reinstall the 10.6.2 drivers and stay put.

     

    Looks like this iMac is officially dead in my eyes. Will wait for a revision of the Mac Mini with a cinema dispay for my next machine.

     

    Too bad - this iMac could have lasted for quite a few more years. How am I supposed to sell this thing with good concience knowing that if the next owner updates to 10.6.2+ it will be a brick?!?! There is nothing hardware-wise wrong with it, but installing the newest OS renders it completely unusable. Ugh. Thanks for nothing 10.6.

  • by jaycee1980,

    jaycee1980 jaycee1980 Jun 25, 2011 8:07 AM in response to nekosaur
    Level 1 (0 points)
    Jun 25, 2011 8:07 AM in response to nekosaur

    Precisely why my old iMac is now my girlfriends machine - running Windows 7, where it is perfectly usable and stable.

     

    Apple, do you realise how stupid you have made yourselves look here. This is +1 for the Windows market. Well done.

  • by Eminemdrdre00,

    Eminemdrdre00 Eminemdrdre00 Jun 25, 2011 12:00 PM in response to nekosaur
    Level 1 (0 points)
    Jun 25, 2011 12:00 PM in response to nekosaur

    You summed it up perfectly. We know this isn't a hardware issue, there's a problem with the graphic drivers in 10.6.3+. My iMac runs great when I use the older drivers. It's got a 2.66ghz Core 2 Duo processor and 4GB of RAM. I shouldn't need to upgrade just because of a software bug. Is there anything we can do to have Apple fix this? We've all been dealing with this for over a year now. I'll be upgrading to Lion on day 1, but what if it has the same problem?

  • by Tardigrada,

    Tardigrada Tardigrada Jun 25, 2011 2:05 PM in response to DazzaG
    Level 1 (9 points)
    Mac OS X
    Jun 25, 2011 2:05 PM in response to DazzaG

    Looks like I could replace the ATI Radeon HD 2600 Pro with a NVIDIA GeForce 8800 GS. Could that solve the problem?

     

    http://www.welovemacs.com/apim242inco230.html

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