I have upgraded my G3 module to a G4 via Eyetech (who are now on holiday) so I can't contact them.

I can boot into workbench which constantly crashes.

I have the following observations to make.

1)    My AmigaONE worked perfectly reliably with the G3 module under both
Linux and AmigaOS at 800 MHz
2)    With the new G4 module it always crashes at anything above 666MHz
3)    The G4 is a 7455 rated at 933MHz
4)    The FSB speed makes no difference - if I go above 666 MHz at (100 or 133 FSB) - CRASH
5)    Everything works reliably at 666MHz (FSB=133, multiplier=5)
6)    I am fairly certain it is not due to the CPU overheating. I have
installed a Zalman flower copper cooler on the G4 with a large fan and the
heatsink is barely even warm.
7)    Usually, the first guru I get is a 80000004, input.device. general
error of type program. redzone not damaged. Stackpointer is inside bounds.
8)    At 866 MHz the freeze comes really quick after booting into workbench.
9)    At 933 MHz I get the animated boing hand kickstart thingy. i.e. the
hard drive cannot be found.
10)   I think therefore that the problem is hardware related and is only
evident with the G4.
11) An easy way to check whether the system will crash is to open a disk icon's information window and click in the size box. The resultant activity on the ide bus (and hence processor overhead) will always cause my Amiga to freeze. As I said, the highest clock speed I can reliably go up to is 666MHz.

I am not happy having to underclock a 933MHz processor to 666MHz

So, do you think the G4 module is faulty? Or, is it my motherboard?

(Apologies to anyone on OS4users@yahoogroups if a duplicate of this message finally appears on that list after a week).

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AmigaONE XE G4
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@gadgetgaz

Thats not good !!

I was going to mention HEatsinks ...But your've covered that base pretty damn well with a Zalman Flower !!

How about psu ? Got enough Grunt in it ?

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@gadgetgaz

Maybe the voltage?

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ikir

@gadgetgaz

That really does sound odd.
The Zalman cooler is a bit of a lump by the sounds of things, so are you sure it's on OK ? How are you fixing it to the CPU ? Check to make 100% sure that the Meg-Array connector to the motherboard is in correctly.

What CPU grease are you using in between the CPU and the heatsink ?

One thing to check would be to plug the G3 back in (if you still have it) and make sure that works.

EDIT:
What make is your RAM ? Markings on the chips would be useful.

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"Knowledge is power. Power corrupts. Study hard, be evil."

@ikir

Ah, yes. That's more likely. J17 on the motherboard should be (digs out instructions)
on(1),off(2),on(3),off(4) for a G4 and off(1),on(2),off(3),off(4) for the G3.

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"Knowledge is power. Power corrupts. Study hard, be evil."

@evilFrog

Thanks everyone for all the replies but it is still the same. I will answer all the suggestions in this one reply.

I convinced myself this afternoon that it was the PSU (I hadn't considered this before). It is a Suntek case with a Suntek branded 300W PSU. I have disconnected my CDROM drives and the second memory card to ease the load but this made no difference. So surely this is not where the fault lies.

I already set the J17 dip switches - Eyetech's instuctions were quite clear about this and I had double checked on the MAI docs on the AmigaONE CDROM. J17 is well sorted.

The Megarray is fastened snuggly in place and the screws are fastened up.

The Zalman flower is firmly screwed down squarely onto the G4 and the heat seems to be transferred to the heatsink. When the fan is running the flower is barely even warm.

I used some Electrolube HTC initially and when there were crashes I used the grease that came with the Zalman kit - still no luck!

The G3 was traded in against the G4 so I can't go back to test it but nothing has changed with my setup other than the G4 module.

I have two memory cards - the first one came from Eyetech with my motherboard and is a Hynix AA05 11112042304 256MB PC133 3.3v 32m72 ecc Reg.

The other is exactly the same spec but is branded from Crucial. Neither stick makes any difference. I have tried them separately and swapped them in the sockets - makes no difference.

It still seems like a heat problem but the flower cooler should easily cope with the heat from a G4. So, anyone have any other ideas?

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AmigaONE XE G4
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@gadgetgaz

Gday J17 1 on 2 off 3 on 4 off =1.59v with G4 i found to low and very unstable

i use 1 on 2 off 3 off 4on =1.79v now i also run @1000mhz at that no probs

try it see how it goes

Also another thing that causes probs is the onboard battery i know of at least 6 ppl had simular probs as you and it was the battery buy another one first b4 upping core voltage

upp core if you want more speed

@gadgetgaz

What does it do when you boot into Linux? That would be my first question.

Of course, if you wiped Linux from the device, you can't test this.

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I've decided to follow an awful lot of people I respect and leave AmigaWorld. If for some reason you want to talk to me, it shouldn't take much effort to find me.

@simplex

I couldn't wait to see the back of Linux so I reformatted the hd for OS4.

I have tried booting from the OS4 CD to make sure it is nothing on my hardrive and it is just the same.

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AmigaONE XE G4
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@poweramiga2002

> i use 1 on 2 off 3 off 4on =1.79v now i also run @1000mhz at that no probs

Is this safe? Eyetech's documentation threatens, "Incorrect voltage settings will almost certainly destroy the CPU module..."

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AmigaONE XE G4
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@gadgetgaz

Gday have been running @ this for about 7 months now with no probs got a good cooler on the cpu runs quite cool

@poweramiga2002

Quote:

poweramiga2002 wrote: @gadgetgaz Gday J17 1 on 2 off 3 on 4 off =1.59v with G4 i found to low and very unstable i use 1 on 2 off 3 off 4on =1.79v now i also run @1000mhz at that no probs try it see how it goes Also another thing that causes probs is the onboard battery i know of at least 6 ppl had simular probs as you and it was the battery buy another one first b4 upping core voltage upp core if you want more speed

Here's what I've found when going through the Motorola/Freescale documentation on the various 7455 parts out there.

There are two distinct voltages that may need to be used, according to which part number is on the 7455 CPU.

XPC7455RX933PC needs 1.85V
XPC7455RX933LC needs 1.6V

Those are the only two entries I could find for the 933 MHz chip. I don't know which one is in mine (when I checked it after getting the board, I didn't write down the whole thing, just noted that I had the 933 MHz part).

So since yours is more stable at 1.79V, maybe yours is one that needs 1.85 volts instead of 1.6?

Sounds like it might be time for everyone to check their CPUs and set the voltage accordingly. Might explain a lot of the problems many of us have had, since it seems Eyetech's instructions DON'T take into account what CPU part may actually be installed on the card (the 7451 has different voltages even, as low as 1.3V according to the frequency).

BTW, here are the jumper settings for 1.84V (closest it will get to 1.85):

1 off
2 on
3 off
4 on

Straight out of the board docs from the A1XE install CD that came with it (the A1XE-User-Manual.pdf file in the Documentation directory).

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@all

I just took a look at my CPU in my A1. It is the XPC7455RX933PC part, so is supposed to have 1.85V core voltage per Motorola's docs to run at 933 MHz. Mine was set to 1.59V by Eyetech (unless Software Hut changed it before they shipped it to me).

I just changed mine to 1.84V, as close as I can get the A1 to what is supposed to be there per Motorola's docs. I've been running mine at 933 MHz for quite a while now, seemingly without issues. Wonder if some of my "niggling" issues (like the crash/loop that started happening after I added textures to the window borders in GUI prefs) are being caused by that?

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@DWolfman

Well, that crash I mentioned above still happens. What's weird is I seem to be the only one with that particular problem.

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@DWolfman

Quote:

What's weird is I seem to be the only one with that particular problem.

Have faith, hopefully it will be solved sooner or later.
I do with my crash/freeze problem.

My problem is linux.
OS4 works more or less flawlessly on my machine.
Linux on the other hand is nowadays almost unusable, and I haven't been able to solve the problem, that it random freezes every now and then.
My latest suspect was the gfx-card, but since OS4 works fine, I can't see why it would not work in linux.
The same goes for the ram.

At least you could use the serial-output to get a log, that is a start.

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@tomazkid

are you running yld or deb
I had probs with both above 800 mhz thats when i was playing with voltage and as soon as i got to 1.79v all was stable i even run it @ 1133mhz for a couple of months but got nigly lockups now and then so went back to 1000mhz had no more lockups
dosent matter now havent touched linux since os4
i have two 80gig hd,s one with linux the other os4 am seeriosly thinkig of just formatting linux drive and using it for os 4 as well


im quite glad to see the back of linux

os4 pre rocks just emagine what treet were in for with full version of os4

@DWolfman

> I just took a look at my CPU in my A1. It is the XPC7455RX933PC part, so is
> supposed to have 1.85V core voltage per Motorola's docs to run at 933 MHz.
> Mine was set to 1.59V by Eyetech (unless Software Hut changed it before they
> shipped it to me).

I have an XPC7455 RX933PC as well. OS4-pre is suffering from random partial
freezing here, so I want to try if increasing the voltage cures this problem.

How much did the CPU temerature increase when you changed the voltage?
I'm using a modified athlon cooler now, but I'm not sure if that will keep
the G4 cool enough after the voltage is changed.

Kind regards,

Dennis

@poweramiga2002

Quote:

are you running yld or deb

I had those problems both with YDL and Debian, I've tried everything I could imagine was to blame, under the year I've had my A1, but not found the cause.

What I really don't get is why OS4 works so fine, when Linux does not.

I've got the 7450/51 at 800 mhz, haven't actually thought about the core-voltage at all.

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Site admins are people too..pooff!

I run my G4 at a higher CPU voltage (I can't remember which, I think it's 1.79v) and it runs well.
My A1 runs like this since 1 year with no problems !

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Philippe 'Elwood' Ferrucci
Sam460 1.10 Ghz
AmigaOS 4 betatester
Amiga Translator Organisation

@tomazkid

It is probably your memory. See if you can try something different in that area.

Regards,

Ross..

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