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All replies
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Helpful answers
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Apr 19, 2012 9:35 PM in response to aieronimoby swmaster,I have two iMac7,1s, both running 10.7.3 with the 10.6.2 ATI kexts. they work perfectly. so did they with 10.6.8.
just go ahead with the kext fix.
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Apr 19, 2012 9:42 PM in response to aieronimoby Tardigrada,Yep, I confirm this (for ATI GPUs). I also have an iMac 8,1 with 10.6.8 running in 64-bit mode with the 10.6.2 Kexts almost a year now.
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Apr 20, 2012 5:51 AM in response to aieronimoby Ken Cluff,FYI: I have an iMac 7,1. I've been running with the kext fix on OS10.7.3 for several months now without a problem.
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Apr 20, 2012 12:33 PM in response to Ken Cluffby goskip40,Hello guys,
This is interesting I am sure I read earlier in this very lengthy thread that there was a kernel panic encountered with 10.6.8. Mine is an iMac8,1 so capable of bootimg into 64 bit mode.
Tempted to give it a go, I really dont want to spend £134 un-necessarily.
Many thanks for that.
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Apr 20, 2012 12:38 PM in response to goskip40by TK111,Yes, if I remember correctly on my iMac8,1, 10.6.8 when used with the kext fix while running as 32 bit gives the kernal panic. I changed my iMac8,1 to 64 bit and used the kext fix with no problem. But since then, new GPU and Lion with standard Lion kexts and no problem either.
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Apr 20, 2012 12:47 PM in response to TK111by Marno49,Remind me again what your original GPU was? What was it replaced with?
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Apr 20, 2012 12:52 PM in response to goskip40by Brian from VA,Just to give you reassurance, goskip40, I also have an iMac 8,1 (with ATI Radeon HD 2600 Pro) running 10.6.8 in 64-bit mode with the kext fix, and it has worked fine for me. I think the only real downside is that whenever you (or someone else) upgrades OS X, you have to re-apply the kext fix.
(I do have a problem where the screensaver won't always start when it should, but I don't think it's related to the kext fix or anything.)
Good luck!
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Apr 20, 2012 1:30 PM in response to Brian from VAby goskip40,Many thanks indeed Brian (and TK111). I am tempted to do this. The other day I dropped the Kext files to my desktop in readiness and then found the bit in the thread about issues with running on 10.6.8
As mentioned I am on an 8,1 system. Have you guys set your systems to boot into 64bit mode by default? Just wondering if the system is likely to panic if it defaults back into 32 bit mode. I guess at that point you can reboot back into 64 bit.
Many thanks again - it is appreciated.!
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Apr 20, 2012 1:59 PM in response to Marno49by TK111,My original GPU was ATI Radeon HD2600 Pro replaced with the same.
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Apr 20, 2012 2:00 PM in response to goskip40by TK111,I would switch your system permanently to 64 bit. As far as I know (not that far, maybe) there are no downsides to that. I can't remember how to do it, though, whether I saw it in this thread or not, but a google should turn up the procedure. It's a simple thing.
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Apr 20, 2012 2:40 PM in response to TK111by goskip40,Looks fairly straightforward, this link explains http://support.apple.com/kb/HT3773?viewlocale=en_US&locale=en_US
I have booted into 64 bit mode now just to ensure system is stable.
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Apr 21, 2012 11:36 AM in response to goskip40by goskip40,Well got my kext fixes in place now. I did have one more hang today prior to install. One moment of panic, the system hung on reboot, I dont think the kext helper was responding as I did a kill on the pid for it in the end and the system booted cleanly.
Thanks guys again for assistance.
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Apr 21, 2012 1:25 PM in response to goskip40by mediaguru2,Having done the kext fix originally back in early 2011, going to 10.6.6 and having NO freeze ups since then, I decided to move on to 10.6.8 today. I made a very serious error in not checking whether my 8,1 iMac was 32 bit or 64 bit before changing the kext files, which I had saved in a folder from the previous time. So when I rebooted after using kext helper to change the files I got the grayed out screen telling me to restart which I did and it reappeared every time I tried to restart...I though I was screwed.
My solution was to reboot using my original 10.6.1 disc and with that I was able to use my back up mirrored hard drive to start up from. When I got in to that I was able to then get into the internal hard drive and go to the terminal program in utilities and type in the code to switch my computer to 64 bit, which I found online. After that all has been well. What a relief.
I had been holding off and it was only this week that I finally saw enough evidence from forum posters to convince me that the move to 10.6.8 had been totally successful for them. Next upgrade will be to Lion. Not for while though.
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Apr 22, 2012 1:11 PM in response to mediaguru2by goskip40,Yes - exactly the same as yourself. As you may have read I had actually ordered a new GPU for my iMac 8,1 (2008) having been stuck on 10.6.2 for well over a year. I knew the kext fix was good on 10.6.7 to which I upgraded to initially, but then I found that iLife11 would not load.
I was forced to go 10.6.8 but I had read that the kext fix would not work on this release :-(
However, some of the very helpful guys here convinced me to go for it on 10.6.8, so long as I ran in 64 bit mode. I took it slowly, I switched my machine to 64 bit mode, then changed the default boot mode (for 64 bit) and ran it there for a while. Did a couple of reboots to ensure was good. ps. I had taken a full backup prior to this.
I used the kext helper which worked cleanly within a few seconds, but the reboot did hang which concerned me a little. I needed to kill the kext helper from the Unix prompt before the system rebooted. After experiencing a hang my heart was in my mouth for a few seconds, but was relived to see it boot properly.
So far (24 hours in) no hangs, so I will cancel the GPU I ordered, but will have to remember to do the kext fix when I go to Lion.
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Apr 24, 2012 5:14 AM in response to Spokes78by LasVegasBones,I have Lion on a machine less than ayear old and it is completely frozen. No response to mouse or pad. Argh!!!