Repariere deine Sachen Community Store

Der Mac Pro (Anfang 2009) kam im März 2009 auf den Markt. Er führte erstmals die Nehalem Architektur von Intel in die professionelle Apple Desktop Reihe ein, und verfügt über ein leicht neu konzipiertes Inneres, das auch bei den 2010 und 2012 CPU Updates beibehalten wurde.

202 Fragen Alle anzeigen

Einstellungen

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?

Diese Frage beantworten Ich habe das gleiche Problem

Ist dies eine gute Frage?

Ja Nein
Bewertung 1

1 Kommentar:

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

von

Einen Kommentar hinzufügen

5 Antworten

Filtern nach:
Am hilfreichsten Neueste Älteste

Einstellungen

Block Image

Im having the same problems. Mayer any ideas?

War diese Antwort hilfreich?

Ja Nein
Bewertung 0
Einen Kommentar hinzufügen

Einstellungen

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

War diese Antwort hilfreich?

Ja Nein
Bewertung 0
Einen Kommentar hinzufügen

Einstellungen

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!

War diese Antwort hilfreich?

Ja Nein
Bewertung 0
Einen Kommentar hinzufügen

Einstellungen

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 :(

War diese Antwort hilfreich?

Ja Nein
Bewertung 0
Einen Kommentar hinzufügen

Einstellungen

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.


War diese Antwort hilfreich?

Ja Nein
Bewertung 0
Einen Kommentar hinzufügen

Antwort hinzufügen

Daniel wird auf ewig dankbar sein.
Seitenaufrufe:

Letzte 24 Stunden: 0

Letzte 7 Tage: 6

Letzte 30 Tage: 18

Insgesamt: 957