Kernel panic on startup after cpu upgrade

Question

Mac Pro 2009-2012

2009년형 초기 Mac Pro(Mac Pro 4,1이라고도 함)는 2009년 3월 Apple의 전문가용 데스크톱 컴퓨터 라인업에 Intel의 Nehalem 아키텍처를 도입했습니다. Mac Pro 5,1은 동일한 내부 설계를 사용했으나 2010년과 2012년에 CPU 업데이트를 추가로 거쳤습니다.

20 질문 전체 보기

Daniel @pherson

평판: 13

1

게시됨: 2017년 11월 21일

옵션

Kernel panic on startup after cpu upgrade

So, I was thinking of upgrading my early 2009 Mac Pro 4,1 Nehalem dual Quad-Core 2.26GHz to a Westmere 12-core but before getting my hands on such CPUs I thought I’d try out a couple of x5570 2.93GHz quad-cores (lidded, fitted with washers and 5mm thermal strips, I happened to have laying around.

The machine is firmware upgraded to 5,1.

I had to re-set cpu b about a million times before the computer would boot without any blinking power button or red lights on the backplane.

It boots fine with any of the two single processors on its own (with red light and fan at full throttle) but when both are installed I get kernel panic on startup.

I’ve reset SMC, started up with opt+R+P and nothing helps. It won’t boot in recovery mode either.

I’ve also removed the Northbridge heatsink and cleaned up the dried thermal paste and reapplied with new.

See linked picture of panic screen here: Kernel panic

(I don’t understand aaanything of it)

Any ideas?

이 질문에 답하기 저도 같은 문제가 있습니다

좋은 질문입니까?

예 아니요

점수 1

댓글 1개:

What system are you running and how was the firmware flashed?

mayer 의 2017년 11월 21일

댓글 달기

답변 5개

What system are you running and how was the firmware flashed? — mayer

jared woodward @jwood0027 평판: 1 · Answer 1 · 2018-01-28T03:13:01-07:00

jared woodward @jwood0027

평판: 1

게시됨: 2018년 1월 28일

옵션

Im having the same problems. Mayer any ideas?

이 답변이 도움이 되었나요?

예 아니요

점수 0

댓글 달기

Franz Katafiasz @mackata49 평판: 1 · Answer 2 · 2018-06-25T03:26:40-07:00

Franz Katafiasz @mackata49

평판: 1

게시됨: 2018년 6월 25일

옵션

Did you solve the problem? I've got the same trouble

이 답변이 도움이 되었나요?

예 아니요

점수 0

댓글 달기

daniel11 @daniel11 평판: 1 · Answer 3 · 2018-06-25T03:40:19-07:00

daniel11 @daniel11

평판: 1

게시됨: 2018년 6월 25일

옵션

Hi,

I gave up for a while, then I refitted the cpu’s 20 more times and then the kernel panics stopped. However one of the heatsink fans isn’t working and I can’t figure out why, maybe the board, maybe the heatsink fan itself. Good luck!

이 답변이 도움이 되었나요?

예 아니요

점수 0

댓글 달기

Bart @bart88840 평판: 227 5 37 · Answer 4 · 2018-06-27T14:54:49-07:00

Bart @bart88840

평판: 227

5

37

게시됨: 2018년 6월 27일

옵션

how thick washers? I used 2 M4 (2.2mm) How tided screws?

Thats for beginning - I need to give MANY more specific informations - if not - no help :(

이 답변이 도움이 되었나요?

예 아니요

점수 0

댓글 달기

freerol @freerol 평판: 13 1 · Answer 5 · 2020-03-01T18:02:32-07:00

hello

i have also questions about problems with the cpus not detected,

the no-booting mac :-(

have to check if the processors are already working

have to check if no pins are bent on the socket under a cpu

i found that..

https://www.imore.com/how-upgrade-your-o...

1) the black connectors of the heatsinkers ,

have to be reseated (a little bit out of their original position).

to be perfectly connected.

2) doing this tricky operation… NEVER OVERTIGHTEN the springscrews when seating back the sinkers.

cross pattern. never press on the top of the sinker.

count the number of rotations before (when removing the sinkers),

note them, and reproduce them with care

3) have to respect the difference of thickness of a delidded cpu and a lidded one. (3mm or 5mm),

this layer…. with 3 or 3 washers?

5mm thickness of thermal strip ? he removed the original pink layer.

Mac Pro 2009-2012

Kernel panic on startup after cpu upgrade

답변 5개

답변을 추가하세요