mcknightmare Posted December 4, 2008 Share Posted December 4, 2008 Hi all - had a look around but was unable to find an answer to the above problem. I've got Kalyway 10.5.2 running nicely on a P5W deluxe build (wi-fi with the realtek drivers is a bit unstable but that's another story). I've managed to get hold of a quad core qx6700 and have replaced the E6400, but the computer hangs at the grey Apple screen. So the question is, do you need to do a clean install when changing processor? Link to comment https://www.insanelymac.com/forum/topic/139501-problem-upgrading-dual-core-e6400-to-a-quad-qx6700-on-a-p5w-dh-deluxe/ Share on other sites More sharing options...
fusionne Posted December 4, 2008 Share Posted December 4, 2008 I was able to swap a Core 2 Quad Q6600 (Conroe) with a Q9550 (Yorkfield) with no issues. I would think that your problem is stemming from the fact you're going from 2 cores to 4 cores, since you're still using a Conroe CPU. Try booting with cpus=1? Link to comment https://www.insanelymac.com/forum/topic/139501-problem-upgrading-dual-core-e6400-to-a-quad-qx6700-on-a-p5w-dh-deluxe/#findComment-987866 Share on other sites More sharing options...
lensboard Posted December 4, 2008 Share Posted December 4, 2008 Hi all - had a look around but was unable to find an answer to the above problem. I've got Kalyway 10.5.2 running nicely on a P5W deluxe build (wi-fi with the realtek drivers is a bit unstable but that's another story). I've managed to get hold of a quad core qx6700 and have replaced the E6400, but the computer hangs at the grey Apple screen. So the question is, do you need to do a clean install when changing processor? Yep the above poster beat me to it. Link to comment https://www.insanelymac.com/forum/topic/139501-problem-upgrading-dual-core-e6400-to-a-quad-qx6700-on-a-p5w-dh-deluxe/#findComment-987874 Share on other sites More sharing options...
mcknightmare Posted December 4, 2008 Author Share Posted December 4, 2008 You'll have to excuse me here for being a bit inexperienced. Does that mean disabling one or more of the cores? I may as well go back to the E6400! Link to comment https://www.insanelymac.com/forum/topic/139501-problem-upgrading-dual-core-e6400-to-a-quad-qx6700-on-a-p5w-dh-deluxe/#findComment-987923 Share on other sites More sharing options...
fusionne Posted December 4, 2008 Share Posted December 4, 2008 Yes, that would disable all but one core. But it would definitely tell you if the # of cores is causing the problem. You can also try to boot into safe mode with -x. In either case, use -v so you get a verbose output instead of the Apple logo... you'll be able to see where it hangs. I did have a few issues with switching to a Yorkfield, as it opened up some additional options (VTd, etc.) in the BIOS, which when enabled screwed up VMware and Parallels. It's unlikely that this is the case with your system since you're still using a Conroe/Kentsfield, but you might want to see if any settings changed in your BIOS with the new CPU anyway. Link to comment https://www.insanelymac.com/forum/topic/139501-problem-upgrading-dual-core-e6400-to-a-quad-qx6700-on-a-p5w-dh-deluxe/#findComment-987987 Share on other sites More sharing options...
candykane Posted December 6, 2008 Share Posted December 6, 2008 1st What bios version are you running? old Frontsidebus 1066 MHz new => 1333 MHz i think you sould try clocking it down and see what happends. or replace your kernel with xnu .i think its a buss problem Link to comment https://www.insanelymac.com/forum/topic/139501-problem-upgrading-dual-core-e6400-to-a-quad-qx6700-on-a-p5w-dh-deluxe/#findComment-989373 Share on other sites More sharing options...
fusionne Posted December 9, 2008 Share Posted December 9, 2008 Both the E6400 and QX6700 the OP was switching between are 1066MHz FSB CPU's. Other than the unlocked multiplier, the QX6700 (Kentsfield) is basically two E6700's (Conroe) put together. So unless he's overclocking the new CPU, the only factor could be the change in # of cores. FWIW, I went from a Q6600 (Kentsfield / 2.4GHz / 1066MHz FSB / 8MB L2) to a Q9550 (Yorkfield / 2.83GHz / 1333MHz FSB / 12MB L2) without even a hiccup, but both had 4 cores. Was also using Vanilla 9.5.0 kernel. Link to comment https://www.insanelymac.com/forum/topic/139501-problem-upgrading-dual-core-e6400-to-a-quad-qx6700-on-a-p5w-dh-deluxe/#findComment-992765 Share on other sites More sharing options...
mcknightmare Posted December 14, 2008 Author Share Posted December 14, 2008 Still no joy! Have updated the Bios and did a clean install with the latest iDeneb (vanilla). Wondering if its a bios settings thing - anyone have any advice? All suggestions are really appreciated. Link to comment https://www.insanelymac.com/forum/topic/139501-problem-upgrading-dual-core-e6400-to-a-quad-qx6700-on-a-p5w-dh-deluxe/#findComment-998785 Share on other sites More sharing options...
mcknightmare Posted December 21, 2008 Author Share Posted December 21, 2008 Hopefully this will help someone point me in the right direction: When booting in verbose mode it hangs at the following message: Unknown SIGFPE code 1 Everything I've read suggests a p5w deluxe motherboard with a qx6700 processor should work like a charm with a vanilla install - I can't work out what I'm doing wrong. I haven't tried disabling any of the cores as I'm determined to get them all working - its what I bought the processor for after all! Thanks once again for all your help. Link to comment https://www.insanelymac.com/forum/topic/139501-problem-upgrading-dual-core-e6400-to-a-quad-qx6700-on-a-p5w-dh-deluxe/#findComment-1008457 Share on other sites More sharing options...
og-phantom Posted December 22, 2008 Share Posted December 22, 2008 Hopefully this will help someone point me in the right direction: When booting in verbose mode it hangs at the following message: Unknown SIGFPE code 1 Everything I've read suggests a p5w deluxe motherboard with a qx6700 processor should work like a charm with a vanilla install - I can't work out what I'm doing wrong. I haven't tried disabling any of the cores as I'm determined to get them all working - its what I bought the processor for after all! Thanks once again for all your help. Does it boot into windows ok? Maybe the CPU is bad? Link to comment https://www.insanelymac.com/forum/topic/139501-problem-upgrading-dual-core-e6400-to-a-quad-qx6700-on-a-p5w-dh-deluxe/#findComment-1009802 Share on other sites More sharing options...
mcknightmare Posted December 23, 2008 Author Share Posted December 23, 2008 Windows partition seems to work fine Link to comment https://www.insanelymac.com/forum/topic/139501-problem-upgrading-dual-core-e6400-to-a-quad-qx6700-on-a-p5w-dh-deluxe/#findComment-1011135 Share on other sites More sharing options...
og-phantom Posted December 23, 2008 Share Posted December 23, 2008 Windows partition seems to work fine I would suggest to run prime95 for at least an hour and see if any of the cores fail. Link to comment https://www.insanelymac.com/forum/topic/139501-problem-upgrading-dual-core-e6400-to-a-quad-qx6700-on-a-p5w-dh-deluxe/#findComment-1011534 Share on other sites More sharing options...
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