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Mountain Lion reboots after initial kext load

installation reboot

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#1
lkelly2006

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So I've successfully installed Mountain Lion on my laptop, so I'm pretty certain it's not the install media. Here's the issue:

When I first boot, before I can't even get to the installation screen, all of the installation kexts load and then it will immediately reboot - prior to the kernel being loaded. I have Lion working perfectly on this PC as well, so it's a bit odd. All of the bios settings are set up correctly so I don't think it's that (could be wrong). My motherboard is

Asus P6X58D Premium and the rest of my specs are in the signature.


Any thoughts?



#2
yonyz

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Try booting with CPUS=1.

#3
Maniac10

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Try booting with: UseKernelCache=No Or delete the line if it is already set to "Yes" in your org.chameleon.boot.plist. You can also update to the latest chameleon (v2000)

#4
eep357

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-x -f -v use all three, -f will skip the kernel cache as a one time flag so you don't need to edit boot.plist, -x will only load the minimum required kexts and of course always boot verbose -v

#5
Skreel

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had the same issue,
upgrading the chameloon bootloader (ermac) solved it.

#6
farfan

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no other ideas??
already tried all flags, updated bootloader, recreated cache, then booted without cache.
nothing worked...
any help would be very much appreciated.

#7
yonyz

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After installing ML, what else did you install? This includes kexts, smbios and all that...

#8
eep357

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Oh, ASUS X58..Duh, sorry didn't see that. You need to replace AppleACPIPlatform.kext with the version from Snow Leopard, Yes Snow Leopard. Version 1.3.5 or 1.3.6. Common problem on ASUS X58 boards. Mine luckily won't reboot or KP, just hang for 2 minutes if I don't swap that out. Same prob with 10.7.4 and ML DP1 and up

#9
lkelly2006

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So I've successfully installed Mountain Lion on my laptop, so I'm pretty certain it's not the install media. Here's the issue:

When I first boot, before I can't even get to the installation screen, all of the installation kexts load and then it will immediately reboot - prior to the kernel being loaded. I have Lion working perfectly on this PC as well, so it's a bit odd. All of the bios settings are set up correctly so I don't think it's that (could be wrong). My motherboard is

Asus P6X58D Premium and the rest of my specs are in the signature.


Any thoughts?


Update: It seems it was something to do with my Bios configuration. I set it to stock settings, had my processor overclocked to 4ghz, and it booted. Would be extremely difficult to list all edits made to the Bios as there were so many! The only additional Kexts I added to the install media were nullcpu and fakesmc. No special flags were used either. I would like to get it running on the 4ghz setup for video editing purposes. As of right now, the processor will only work at 2.4ghz with 12GB DDR3 at 1066 vs 4.0ghz and 1600mhz - pretty substantial difference. Any known incompatibilities from Lion to Mountain Lion when it comes to overclocking?

BTW for anyone using GTX 4 series, the 480 works great on Mountain Lion. I didn't have to follow any netkas posts to get full throttle - so it seems at first glance.

#10
artur-pt

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hello

what i use for run lion 10.7.4 , can use for ml

use same /Extra and if any special configs for Lion , use them for ML.

good hack

#11
eep357

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If you need a good DSDT with SSDT tables, Fabio aka ErmaC has a ASUS x58 thread with pre-configured ones for the different ASUS models and some changes as of 10.7.4 that will carry over to ML. If your booting without any slowdown during the boot process or KP's using ML AppleACPIPlatform, you are very lucky :) [GUIDE] Lion 10.7 on Asus X58 (LGA 1366) i7 9xx will it not overclock at all, even a little like 2.45ghz? Mine will idle at 2.4ghz, but that is the lowest speed step clock, will clock up to 3.8ghz or 4.2ghz depending on what I set the max multiplier for, but couldn't go past 3.8ghz without water-cooling even in the winter.





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