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Jan 10, 2011 2:44 PM in response to RangerBby KrzysiuTurek,I think I'm solved the problem. By the 'solved' i mean the main reason, not the temporary solution. First I would like to give you some information that may be helpful:
1. My iMac is: iMac8,1 with gpu ATI Radeon HD 2600 Pro;
2. You must have to installed mac osx 10.6.2 update (not newer) ;
3. This is very risky solution, so please create backup;
As you now the problem it's only caused by the software - probably the gpu driver. In osx the gpu drivers is in kext files, placed in /System/Library/Extensions. Here is steps that I made to restore old drivers from 10.6.2 to 10.6.6:
1. On the 10.6.2. system make backup of /System/Library/Extensions (pendrive or external drive is the best place);
2. Download the "Kext Helper Tool" from http://cheetha.net/
3. Run the 10.6.6 update;
4. After reboot run the "kext helper tool".
5. Drag and drop to the Helper those files:
ATI2600Controller.kext
ATIFramebuffer.kext
ATISupport.kext
6. Type password and click Easy Install.
7. Reboot.
By doing this we insert to the system the driver in the older (good) version 1.6.6 - the newest version is 1.6.26.
Several explanations to the Nvidia GPU users: in my system there are no kext files named nvidia or similar, so i can't tell you wich you must restore.
When apple give us the the 10.6.7 update probably you must have to restore old drivers again.
My system is worked fine from three days, without smc fan control and similiar tools. The "only" risk is that your system will not boot up.
Sorry for my English, i write to you with google translate
Regards from Poland -
Jan 10, 2011 2:47 PM in response to KrzysiuTurekby B. Hurt,WOW!! Google Translate did a great job on this! I know phd's that don't write this well. -
Jan 10, 2011 2:56 PM in response to KrzysiuTurekby morpho,This is an extremely dangerous solution and I won't recommend it to anyone.
But if you managed to stop the system from glitching/crashing, then you should definitely file a bugreport to Apple.
Keep us informed -
Jan 10, 2011 3:49 PM in response to KrzysiuTurekby Vurey,To think this could all be caused by a bad set of drivers. I thought that's what PCs were for! (snark, snark). It seems so obvious, now that you mention it!
I have an iMac 7,1 (Mid 2007) with an ATI Radeon 2400, so I substituted ATI2400Controller.kext located in my extensions folder.
The setup ran as expected (with an obligatory screen freeze after the initial reboot). However, once I installed those three drivers using kext utility, I appear to be left with a functioning iMac (with App Store, hurrah!)
I'll give it a few days of use before I break out the champagne, but if this works as advertised then I owe you a beer KrzysiuTurek.
All I can say is that as long as you have appropriate backups, install Discs and your iMac isn't mission critical, then it might just be worth giving this a go if you feel fed up with 10.6.2
Anyway, I'll report back in a few days if all is still working as it should.
Thanks again for the suggestion. Now I'm off to look around the Mac App Store! -
Jan 10, 2011 3:51 PM in response to morphoby KrzysiuTurek,@B. Hurt - thanks
@morpho - ok I will send immediately. -
Jan 10, 2011 4:25 PM in response to KrzysiuTurekby yogidig,Hi excellent news.. I'll try your solution over the weekend ... If someone else have the time to try it.. please keep us posted.
Best regards, -
Jan 10, 2011 9:42 PM in response to KrzysiuTurekby Eminemdrdre00,I'm going to give this a try right now. I'll report back if it fails, or later this weekend if I run smoothly on 10.6.6. Thanks for the suggestion KrzysiuTurek! -
Jan 11, 2011 2:55 AM in response to Eminemdrdre00by KrzysiuTurek,I have some aditional information:
http://img214.imageshack.us/i/dsc7813.jpg/
I made this picture several weeks ago when Apple give us a 10.6.5 update. I could not make a screenshot with preview.app because on screenshot everything was ok. Another thing is that when I move the Safari, everything was randomly back to normal.
I belive that only one of three files is corrupt and it probably is ATIframebuffer.kext. So if anyone can restore files individually, he can also help us. -
Jan 11, 2011 10:03 AM in response to KrzysiuTurekby Eminemdrdre00,Was this before or after the solution you posted? -
Jan 11, 2011 2:18 PM in response to Eminemdrdre00by KrzysiuTurek,Before: "I made this picture several weeks ago when Apple give us a 10.6.5 update"
And today is another beautiful day without freeze, and with app store of course -
Jan 11, 2011 8:42 PM in response to KrzysiuTurekby yogidig,Hi KrzysiuTurek,
I tried to apply your solution but I did something wrong because the computer only booted in safe mode. So if anyone could help me out. I have an iMac9,1 with NVIDIA GeForce GT 130.
I replace the following 10.6.6 kext files:
GeForce.kext
GeForce7xxxGLDriver.bundle
GeForceGA.plugin
GeForceGLDriver.bundle
GeForceVADriver.bundle
For the following 10.6 kext files:
GeForce.kext
GeForce7xxxGLDriver.bundle
GeForce8xxxGLDriver.bundle
GeForceGA.plugin
GeForceVADriver.bundle
So if anyone knows what I did wrong, I would really appreciate your help
Thank you so much,
PS: My apologies for my english (it isn't my first language) -
Jan 12, 2011 3:01 AM in response to KrzysiuTurekby balintalovits,Dude!
If you already know what the problem is, plese report it to apple, cuz it's seems to me, they really dont care about the whole issue.
Message was edited by: balintalovits -
Jan 12, 2011 3:21 AM in response to DazzaGby vexbit,@KrzysiuTurek - I've tried replacing the driver before but doing it manually and it didn't work for me - However, I must have done something wrong last time because your solution has worked perfectly for me so far! Thankyou! - I've been running 24 hours on 10.6.6 without a crash.
@yogidig - Most people on this thread seem to be having problems with ATI graphics. If your machine is hanging using an Nvidia graphics, I think you've probably got different problem. -
Jan 12, 2011 5:12 AM in response to KrzysiuTurekby nekosaur,Add me to the list - THIS WORKS!
Tried the method that KrzysiuTurek suggested, following each step as laid out and so far I am running at over 24 hours with NO issues at all.
Here's what I did:
• Reinstalled the original 10.6.0 OS from my Snow Leopard DVD
• Immediately upgraded to the 10.6.2 update via combo update package
• Grabbed the following Kernel extensions and put them on the desktop for easy access:
ATI2400Controller.kext (I have an iMac 7,1 with ATI2400 graphics)
ATIFramebuffer.kext
ATISupport.kext
• Upgraded to 10.6.6 via another combo update package
• Used Kext helper tool to reintegrate the OLD video drivers back into the library extensions.
• Rebooted
I am reporting NO issues now at all. The machine just FEELS better. No lag, no weird pauses, no glitches, no artifacting, and best of all - no freezes.
I could guarantee that in the morning when waking my iMac from sleep that a freeze would happen. It was 100% reproducible every day. This morning, absolutely perfect!
Thanks goes out to you KrzysiuTurek! I will keep these three drivers handy for when Apple updates the OS - a quick 60 second process to reintegrate them until they get it fixed.
A "special" note to ATI - once again, you seem to magically break your video cards with terribly-written drivers. I thought that I got rid of this kind of garbage when I switched from a PC in 1998... guess I was wrong. Apparently even on a Mac you can manage to muck things up! I do not blame Apple at all for this. ATI however.....
Anybody want to be brave enough to "reintegrate" each driver (of the three) back in to the extensions folder to find out EXACTLY which one it is? Maybe that would help Apple kick ATI in the pants a bit to get a fix issued.
My iMac is usable again!!!!! -
Jan 12, 2011 5:16 AM in response to nekosaurby vexbit,Logically speaking, it must be one of these two files:
* ATIFramebuffer.kext
* ATISupport.kext
As it affects more than just one specific card- My gut instinct would be the ATIFramebuffer, but as the files may be interdependent, you might not be able to restore the files one at a time - they might not work with mismatched versions.