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Jan 18, 2011 2:16 PM in response to KrzysiuTurekby Jonah Lee Walker,My wife's iMac is a iMac10,1 with an ATI Radeon HD 4670. I assume that I should try the ATI4600Controller.kext
Has anyone successfully tried this on this mac? I would love to know before I attempt it. -
Jan 20, 2011 12:06 PM in response to DazzaGby SaFo,I have exacly the same problem. I never had a problem with my iMac before, until a couple of months ago. My computer completely freezes and the only thing I can do is move around the cursor. The only thing left to do is restarting the computer with the button on the back. Not only does the screen freeze, but sometimes it starts to flicker as well.
I have no idea what the cause can be, allthough I have the feeling it happens when a video or photo based app is running, like Aperture or iMovie. So maybe it's possible that there's an issue with the graphics. Let's hope there's a solution soon! -
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Jan 20, 2011 5:17 PM in response to Tim Ishamby Tim Isham,5 days with the kext fix and no crashes. Whoopee! -
Jan 20, 2011 5:29 PM in response to Tim Ishamby Eminemdrdre00,10 days for me! It definitely works on my iMac8,1 with a ATI 2600 Pro. I just want Apple to fix it...the graphics .kext files are the problem. -
Jan 21, 2011 1:48 AM in response to Eminemdrdre00by Vurey,Good news! Looks like Apple is working on an official fix for 10.6.7
http://goo.gl/37KzJ
"Focus Areas: AirPort, Bonjour, SMB and *Graphics Drivers*" -
Jan 21, 2011 9:05 AM in response to Vureyby nekosaur,I certainly hope this is the case.
Don't get your hopes up too high, though - technically, the last three "point" updates have addressed "graphics issues / drivers" -
Jan 21, 2011 10:41 AM in response to DazzaGby Tazthed,*REMEMBER to REPORT the freezing-problem to Apple even though some of you have "fixed" it by replacing old graphics drivers with new ones! I think it is a very risky solution to the problem...*
*The upcoming OS X 10.6.7 has been sent to developers so this is our chance to put pressure on Apple!*
*Please report here:*
http://www.apple.com/feedback/macosx.html
Message was edited by: Tazthed -
Jan 21, 2011 11:18 AM in response to yogidigby SeSam,I managed to revive the iMac using the MacBook:
1) Put the MacBook in Target Disk Mode and hooked it up to the iMac via Firewire
2) Held down Option on the iMac while booting: it booted from the MacBook's OS X
3) Disk Utility recognised the iMac's HDD and fixed the GPT (partition table)
4) The fixed HDD let me boot from the OS X DVD
5) Installed OS X and restored data from TM
Morals of the story:
1) Use kexthelper as advised; simply copying over does not work
2) Do not hard reset your Mac too often and too brutally
*3) Invest in an external HDD: Time Machine is the next best thing since sliced bread*
4) Apple is being a ******* for failing to write an EFI that lets you boot with a messed up HDD in the system
5) Leave feedback: http://www.apple.com/feedback/macosx.html
Message was edited by: SeSam -
Jan 21, 2011 11:24 AM in response to KrzysiuTurekby SeSam,Question: Does kext helper mess with version numbers? (To coax the kernel into believing it's the right version.) I used it to install 10.6.2 versions of the drivers but the System Profiler lists them as 10.6.6 nevertheless. -
Jan 21, 2011 1:14 PM in response to SeSamby danni l,I guess it remains to be seen whether Apple fixes this problem with the next point update. But in the meantime, BLESS YOU!, KrzysiuTurek, for figuring this out and sharing the process for the fix. Risky? Maybe--but after 9+ months of enduring repeated freezes on anything later than 10.6.2, I was more than happy to make some redundant backups and give it a try. And I've now been freeze-free for 10 days, first on 10.6.5, and now on 10.6.6.
With a combination of other suggested fixes, I'd managed to get my screen freezes down to a few times a week, as opposed to a few times a day. But that meant that I was still holding my breath and gritting my teeth (and hitting command-S obsessively), knowing that it was just a matter of time. Now with 10 days of solid, stable performance behind me, I'm finally able to relax and breathe. Bliss!
BTW, I used Pacifist to extract the appropriate kexts from the 10.6.2 combo updater package, and installed into 10.6.5. Worked like a charm. -
Jan 22, 2011 6:44 AM in response to DazzaGby Mac,I've suffered two white screen moments and a black screen moment in the last week, and after reading this thread, I've submitted my feedback as suggested - here's hoping for an end to this issue soon.... -
Jan 23, 2011 12:32 PM in response to DazzaGby W S H,Is there anyone who could post the relevant kext files for others to download? -
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Jan 24, 2011 7:06 AM in response to E85MACby andre jordan,Has anyone tested this fix with GeForce kext?
I am currently stuck on 10.6.2 cannot move up as system freezes spinning ball etc.
did have some relief for 2 days by removing flash/shockwave in 10.6.6 but problem came back.
iMac9,1 2.66GHz NVIDIA GeForce 9400