You're all getting too technical for me! I don't know what kexts are, but am still getting the freezing. It seems random. Sometimes it goes for several hours ok, with maybe one freeze, then next day it will freeze 5 or 6 times. Firefox or Chrome -doesn't seem to matter. The on/off button is getting a LOT of action.......and what on earth is a "kernel panic" ?
Kexts stands for Kernel Extension. Kernel extensions are little pieces of code that are needed for various hardware and software to run in OS X on your Mac. There is an extensions folder located in OS X system folder where kexts reside. The kext file everyone is talking about is a kext driver code fix for the iMac's video card. I haven't read this whole topic here, but the kext file seems to be specific to a certain video card model. But then, I am not completely sure of this. The kext file fix needs to be downloaded and the file placed or replaced in OS X system>library>extensions folder for the file to work.
A Kernel Panic or KP is a situation where OS X base Unix code called a "kernel" finds either a hardware or software issue that it can't resolve that results in a freeze or "panic" of the basic Unix software code.
If your iMac is experiencing KPs, it could be related to the problems you are having.
Hello KrzusiuTurek and everybody,
great great great work around !!!!!
Thank you so much. Working fine for me : fresh installation of OS X.8.2, 3 kext replaced with 10.6.2 version and the machine is now stable.
I have 2 identical machines : same model, same graphic card (HD 2400 XT), same ROM, same EFI version, ...
One is running 10.6.8 without any problem.
The second one freeze every 3 minutes with : 10.6.6, 10.6.8, 10.8.2, ... Now installed with 10.8.2 and 3 kext from 10.6.2.
Why this difference between the two maxhines ? I don't know. Any idea ?
iMac 20" with following graphics card
ATI Radeon HD 2400 XT :
Jeu de composants : ATI,RadeonHD2400
Type : Processeur graphique (GPU)
Bus : PCIe
Longueur de la voie PCIe : x16
VRAM (totale) : 128 Mo
Fournisseur : ATI (0x1002)
Identifiant du périphérique : 0x94c8
Identifiant de révision : 0x0000
Révision de la ROM : 113-B2250A-207
Version du gestionnaire EFI : 01.00.207
Résolution : 1680 x 1050
Profondeur de pixels : Couleurs 32 bits (ARGB8888)
This topic is largely about the iMac 24" 8.1 with Radeon HD 2600 (2400).
There is no doubt about it that the Kext fix is the solution for topic problem for iMac 8.1
Believe it! it is not fixet. And probably wil not be fixet.
(After 2 years Apple thinks you have a very old computer and wants you to buy a new one, i think)
indeed, it does.
2400 was version 8.0.61, became version 8.10.44.
-rwxr-xr-x 1 root wheel 343848 Sep 11 2012 AMD2400Controller
-rwxr-xr-x 1 root wheel 1856224 Mar 12 01:24 AMD2400Controller
same goes for 2600.
-rwxr-xr-x 1 root wheel 343976 Sep 11 2012 AMD2600Controller
-rwxr-xr-x 1 root wheel 1856344 Mar 12 01:24 AMD2600Controller
way bigger, folks. had no chance to upgrade my imac7,1 but will report as i'm done.
So the questions are again:
* Does the ML 10.8.3 update fix the freeze problem with the 24" 8.1 radeon HD 2600 pro and HD 2400
(Every time I installed a ML update the first couple of hours/days it seemed like it was fixed, but the freeze problem always returend and I had to apply the kext fix again!)
* If the 10.8.3 update did not fix the freeze problem, does the kext fix still work?
Hope to hear some reactions soon.