HP nx7300 and core 2 duo issues

[dweb8888]

Can someone please explain this {censored} to me? I know core 2 duo has problems on this laptop, but last night while running on just one core, I restart and then boot with "fn=3" flag. The system booted and I was runing OSX with both core for over 5 hours without any issues. Now this morning I turn on the laptop and to my surprise it can not boot into OSX with both cores.

I had the fn=3 flag in my com.apple.boot.plist. Tried to remove it and manually enter the flag, but still the same.

 

I mean, computers are supposed to be just "1" and "0" right? It either works or it doesn't. What is this, today it will work, next day will not, a few days later will work again. It is kind of frustrating to be so close and not get both cores to work.

 

If there is someone more educated on this matter please comment. There must be a way to get it to work since it has work, even for just a while. The computer runs definitely better with both cores so we need a solution on this matter.

 

Could it be a problem with the fan? The fn=3 lag is supposed to make the fan run at 100% or so. Even though it had no effect on the performance of the fan, the computer still booted and was running the OS. By the way, is there any solution for the fan speed on this laptop?

 

Thank you in advance!

[dweb8888]

Just updating on the things i discovered just now.

First let me say this laptop must have the most stupid motherboard of all motherboards. How can you have core 2 duo inside a laptop and have one of the processors covered only with thermal plate? The other one is connected to a heatsink which goes to the fan. That other processor is connected directly to the motherboards as if they are one peace. You can not remove that one but you can the other. Now this is the bad thing. If you disable one of the cores in BIOS, do you know which one is disabled? Well, the one with the better cooling gets turned off. I know that, because when I remove the keyboard and power on the computer, the core that is one that has the thermal plate on it gets hot, where the other one with the heatsink and the fan i cold, or sort of. This is stupid since the fan is still working but is cooling the wrong processor.

 

Now some other interesting stuff. I managed to boot again with both cores and work for some time. Then I decided to do some testing. Here is what I found out. When I enable both cores in BIOS and boot with "cpus=1" flag, when I go to "About This Mac", it tells me that I have core 2 duo, although one core is disabled in BIOS. When I go to "System Profiler" it gives me this:

 

Number of processors = 0 - "what the hell, how am I running the OS then?"

Total number of cores = 1 - "this is about right"

 

Now check this out. When I run Xbench I get a result of 92. When I did the same test with both cores enabled I get 95. With just one core I get 85. I am talking about several consecutive runs of this test with the same results.

 

Ok, if this is not strange enough, check this out. Even that I have disabled one core in BIOS, they are both hot when I touch them, which tells me they are both used.

 

By the way, no matter what I do, the fan spins at some lower RPM. When I boot the computer, it goes fast, slows down at the bootloader, increases at the gray apple screes just to slow down again after 2 sec and it stay like that.

 

On a side note, by the time I was typing this, my processor temp went from 60 to 49C and I am runing at 1000 mHz which sucks big time. When I use just one core with no flags at boot the idle temp is about 42-44C with the same mHz. This must mean something. If any of you know of a solution for the fan pleeeeeeeaaaaaaaase say something.

[ab___73]

Just updating on the things i discovered just now.

First let me say this laptop must have the most stupid motherboard of all motherboards. How can you have core 2 duo inside a laptop and have one of the processors covered only with thermal plate? The other one is connected to a heatsink which goes to the fan. That other processor is connected directly to the motherboards as if they are one peace. You can not remove that one but you can the other. Now this is the bad thing. If you disable one of the cores in BIOS, do you know which one is disabled? Well, the one with the better cooling gets turned off. I know that, because when I remove the keyboard and power on the computer, the core that is one that has the thermal plate on it gets hot, where the other one with the heatsink and the fan i cold, or sort of. This is stupid since the fan is still working but is cooling the wrong processor.

 

Now some other interesting stuff. I managed to boot again with both cores and work for some time. Then I decided to do some testing. Here is what I found out. When I enable both cores in BIOS and boot with "cpus=1" flag, when I go to "About This Mac", it tells me that I have core 2 duo, although one core is disabled in BIOS. When I go to "System Profiler" it gives me this:

 

Number of processors = 0 - "what the hell, how am I running the OS then?"

Total number of cores = 1 - "this is about right"

 

Now check this out. When I run Xbench I get a result of 92. When I did the same test with both cores enabled I get 95. With just one core I get 85. I am talking about several consecutive runs of this test with the same results.

 

Ok, if this is not strange enough, check this out. Even that I have disabled one core in BIOS, they are both hot when I touch them, which tells me they are both used.

 

By the way, no matter what I do, the fan spins at some lower RPM. When I boot the computer, it goes fast, slows down at the bootloader, increases at the gray apple screes just to slow down again after 2 sec and it stay like that.

 

On a side note, by the time I was typing this, my processor temp went from 60 to 49C and I am runing at 1000 mHz which sucks big time. When I use just one core with no flags at boot the idle temp is about 42-44C with the same mHz. This must mean something. If any of you know of a solution for the fan pleeeeeeeaaaaaaaase say something.

 

I'm not sure if it's a fan problemm there are many HP laptop users experiencing the same problem as you are.

I've got a HP530 Notebook with a T2400 and have had to run with only one core working for a year now.

The fustrating thing is that it's so random, I have many of times thought that I had fixed it, only to wake up the next day and turn on my laptop and CRASH it's not working with both cores.

 

I think it's a BIOS/ACPI problem and that's why I've been trying to do something about it. Although if i totalled up the number of hours I've put in trying to fix this problem, I should have went out and bought a macbook pro!!!

 

Check out the various topics discussing such problems:

 

ACPI Patcher for BIOS and AML

Chameleon bootloader with SSDT and DSDT ...

NX7400 both cores working

 

 

The last topic above points to a powermanagement problem which I'm currently involved in fixing.

 

I hope this helps????

[dweb8888]

Thank you for the info. Well, now I think it is not a fan issue too. Last night I formatted the HD to install XP and the fan behave exactly the same way. I used speedfan to check the temps and they are exactly the same as in OSX. Under XP I tried to do some CPU intensive tasks to see what happens. Trying to unrar a 3,5 GB file both cores were up 100% and the temp climbed up to as high as 75C. After I finished the test the temp went back down to 47C which seems to be at idle. Now running OSX again the temp stays at 47C and only climbs up to 60+ when I do some heavy work. Basically what speedstep does here is run the cores at 1 GHz and when more work is needed it goes to 1,67 GHz. When work is done it goes back to 1 GHz. That's how the cpu stays cool.

 

I think you are right about a possible ACPI problem. Will check the links. Thanks.

[ontheground]

Just updating on the things i discovered just now.

First let me say this laptop must have the most stupid motherboard of all motherboards. How can you have core 2 duo inside a laptop and have one of the processors covered only with thermal plate? The other one is connected to a heatsink which goes to the fan. That other processor is connected directly to the motherboards as if they are one peace. You can not remove that one but you can the other. Now this is the bad thing. If you disable one of the cores in BIOS, do you know which one is disabled? Well, the one with the better cooling gets turned off. I know that, because when I remove the keyboard and power on the computer, the core that is one that has the thermal plate on it gets hot, where the other one with the heatsink and the fan i cold, or sort of. This is stupid since the fan is still working but is cooling the wrong processor.

 

The thingy with the lack of the fan is not the second cpu, it is the chipset The 2 cpu cores sharing one processor board, which is cooled by a fan with a heatpipe cooler.

 

By the way, any solution for the dual core issue?

 

One of my friends have the same notebook, with fan issues, which I solved, solution here , but I can't get all cores working.

[SticMAC™]

You do know that "Core 2 Duo" does NOT mean TWO physical Processors!!

Your desperate attempt to sound informed, just went up in smoke! Also I dread to think that you actually took the machine apart yourself, with the limited knowledge you must have, of the actual internal components!!

 

The one(8) with the Heatsink(7) on is the real deal, the other non-removables are Controller Chipsets on the Mainboard(13).

(see attached image)

Maybe you should study your machine a bit better in order to understand your issues!?

 

The BIOS setting turns Cores on and off NOT Processors! Also included is the list of officially supported processors on this machine(list at bottom), and according to them this unit does not Core 2 Duo, so it would be interesting to know the exact model you have? The label at the bottom of the unit would tell, like DV6717ez, or something........

 

 

 

 

...........

First let me say this laptop must have the most stupid motherboard of all motherboards. How can you have core 2 duo inside a laptop and have one of the processors covered only with thermal plate? The other one is connected to a heatsink which goes to the fan. That other processor is connected directly to the motherboards as if they are one peace. You can not remove that one but you can the other. Now this is the bad thing. If you disable one of the cores in BIOS, do you know which one is disabled? ............

 

According to HP website: depending on your Model:

For full-featured models: Intel Core Duo T2600 (2.17-GHz) Intel Core Duo T2500 (2.00-GHz) Intel Core Duo T2400 (1.83-GHz) Intel Core Duo T2300 (1.67-GHz) Intel Core Solo T1300 (1.66-GHz) Intel Celeron M 420 (1.60-GHz) processor Intel Celeron M 410 (1.46-GHz) processor

processor processor processor processor

processor

For defeatured models: Intel Core Duo T7600 (2.33-GHz) processor Intel Core Duo T7400 (2.16-GHz) processor Intel Core Duo T7200 (2.0-GHz) processor Intel Core Duo T5600 (1.83-GHz) processor Intel Core Duo T5500(1.66-GHz) processor Intel Core Duo T2300E (1.66-GHz) processor Intel Core Duo T2250 (1.73-GHz) processor Intel Core Duo T2050 (1.6-GHz) processor Intel Core Solo T1350 (1.86-GHz) processor Intel Celeron M 430 (1.73)-GHz processor Intel Celeron M 450 (2.0-GHz) processor Intel Celeron M 450 (1.83-GHz) processor

[ontheground]

You do know that "Core 2 Duo" does NOT mean TWO physical Processors!!

Your desperate attempt to sound informed, just went up in smoke! Also I dread to think that you actually took the machine apart yourself, with the limited knowledge you must have, of the actual internal components!!

 

The one(8) with the Heatsink(7) on is the real deal, the other non-removables are Controller Chipsets on the Mainboard(13).

(see attached image)

Maybe you should study your machine a bit better in order to understand your issues!?

 

The BIOS setting turns Cores on and off NOT Processors! Also included is the list of officially supported processors on this machine(list at bottom), and according to them this unit does not Core 2 Duo, so it would be interesting to know the exact model you have? The label at the bottom of the unit would tell, like DV6717ez, or something........

 

if you posted this for me, you basically missunderstood me. I said the same things like you, but not in your such offensive language. And yes, I've readed the nx7300/7400 service guide, and I'm familiar with this notebook. I meant the Socket M packed 2 cpu cores in a "processor board"

And yes, the old models have Core Duo microprocessors , like that i've installed the osx, but the newest series have Socket M Core 2 Duo CPU, so the asker is not wrong about that anywa. He can have Core 2 Duo in his system.

[SticMAC™]

I feel offended......

I didn't even quote, or referred to you or your post!!??

Normally when a person quotes another in the same thread that quote is directed to that specific person, unless the rules on posting changed!?

My post also requested his model number for us top ascertain if he indeed had a Core 2 Duo.

 

SticMAC

..........

[ontheground]

I feel offended......

I didn't even quote, or referred to you or your post!!??

Normally when a person quotes another in the same thread that quote is directed to that specific person, unless the rules on posting changed!?

My post also requested his model number for us top ascertain if he indeed had a Core 2 Duo.

 

SticMAC

 

Then, I'm sorry for my offensive post. But I thought it was for me, because, your post's quote section was below your post's main section.