@mlehto

Oh, I don't know. Given that the same Linux kernel is used in all the distros, what do YOU think?

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@mlehto

Quote:

Off topic, close your eyes or skip this part ... I got Abit KG7-RAID board with Athlon 1800+ XP and two 512 MB DDR sticks. I'm not problem free with them either. Bulk read and write fails ...

Check if any of the board's capacitors are leaking brown stuff or are domed at the top. Lots of PC motherboard built around that time have bad caps and ABit's models were particularly badly afected. Memory bus problems are often an early sign of this problem because the caps that smooth out the DRAM power supply are usually the first to go.

Quote:

Is that 768 MB limit only in debian or is it general limitation of gnu/linux ??

It's a limitation of the Linux kernel in general. The kernel splits the 4GB address space available on 32-bit processors into 1GB user space and 3GB kernel space. Some of that 1GB is then used for various purposes (such as mapping in PCI devices) so you end up with less that that available for mapping in memory. It's usually about 768MB but various factors can change that, including how much memory is on your graphics card.

There is a kernel patch available to change the split from 1GB/3GB to 2GB/2GB but I don't know if it works on the PPC architecture. I think it is x86 only right now.

_________________
Who do you serve, and who do you trust? - Galen

@mlehto

Summary:
2 REG stick 512MB but different manufacter. OS4 is perfect solid bu memtester reports errors.
1 stick at time memtest reports both as OK.
Debian freeze during installation with both stick.
With only one stick Debian is installing from ftp right now (i'm at work, i will check later).

Seems that problems occur only with both at the same time and only with Debian.

Anyway i can live with 512MB of ram on my A1 I can sell the other module.

@olegil
Sure. My A1 freezed with any option during Debian installation (tried to limit by kernel command, by uboot...). OS4 was right anyway. Now i'm using only one stick and all is ok.

Last edited by ikir on 15-Apr-2005 at 02:50 PM.

_________________
ikir

@ikir

If memtest AND Linux both fail then I would say you're going to see problems with OS4 at some point as well. Likely when you least want to, like if you've got a TON of stuff in memory that you only want to save to disk, THEN it's going to crash on you because the memory is bad

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

NO...... nothing, debian installation freezed the machine again with only one slot. It lasted much more at least. I'm going to use this hd for OS4, bacause no one linux distro is working for me.

_________________
ikir

@Thread

This one is reported to work in uA1.

Apacer 256 MB UNB PC133 CL3

@mlehto

It should! It's the one delivered with the µA1-C


/Harry

_________________
/Harry

[SOLD] µA1-C - 750GX 800MHz - 512MB - Antec Aria case

Avatar by HNL_DK!

Kgrach's module is apparently a custom made module by Centon.
It is not possible to buy anywhere else.
It's a bit more expensive but instead you get 100% tailor made memory for
the µA1 and CL2..


/Harry

_________________
/Harry

[SOLD] µA1-C - 750GX 800MHz - 512MB - Antec Aria case

Avatar by HNL_DK!

@Samwel

I guessed, that it is original, but didn't knew it

Have to remember, that any testing sw won't tell everything, so tailor made memory is not bad idea.

Do you memory madufactured by @kgrach ?

@mlehto
Quote:

Have to remember, that any testing sw won't tell everything, so tailor made memory is not bad idea. Do you memory madufactured by @kgrach ?

The great thing is that you know it will work for sure and it's a CL2 module.
The bad thing is that you get a higher price. But with our nice NB the best thing
is maybe to buy Kgrach's memory and have no problems.

I don't really understand your last sentence. Are you asking me if I have one?
If so, then no not yet anyway. I would like for some european dealer to sell this
first. It costs quite a hefty little sum to send from the US to Sweden.


/Harry

_________________
/Harry

[SOLD] µA1-C - 750GX 800MHz - 512MB - Antec Aria case

Avatar by HNL_DK!

@DrBombcrater

Quote:

Check if any of the board's capacitors are leaking brown stuff or are domed at the top. Lots of PC motherboard built around that time have bad caps and ABit's models were particularly badly afected. Memory bus problems are often an early sign of this problem because the caps that smooth out the DRAM power supply are usually the first to go.

Yep, the old "Popped Cap" syndrome. They will not always be brown, but most of the time they are. Sometimes they will be popped up on top and no leakage (domed as you called it), but still causing problems. If you have a PC and are getting wierd crashes, blue screens, and resets for no apparent reason, even with clean installs, look at the Caps on the board. They are likely popped. Or as my Romanian co-worker likes to say in his accent "they are all fried up!".

@Samwel

I sent my bad memory back and I'm not sure how long it
will take to get a replacement memory. Hopefully, it will
only take a couple of days. If the new one isn't any good
I might try this "KGratch" ?? memory. Do you have a link
or email address for obtaining that memory??

For those who think OS4 is rock solid with bad memory,
I suggest you record every visit to the "Reaper" for a
week and then record the visits with good memory installed.
I'm betting there will be a difference. I've had my original
"good" memory reinstalled for about 2 days and haven't had
the usual 3+ per day visits to the "Reaper" that I had with
the bad 512MB module. Also, GCC no longer fails in the middle
of a long compile. I was so thrilled with just getting my
512MB upgrade that I didn't take note of the increased
failures.

_________________
X1000 with 2GB memory & OS4.1FE

@Xenic

My problem was different, probably it is the reason because OS4 was stable anyway.
I have 2 working 512 stick, but from different manufacter. When used both memtest reported errors.


About the stability... OS4 is solid as always, the only difference is Amplifier that doesn't crash after some hours of playing.

_________________
ikir

@Xenic

Kurt Grach:

http://www.revanchellc.com

If it is CL2 memory, you need DrBC's seta1 tool to adjust uboot to take care of faster timing values.

@Samwel

I got IFX4.5 CD from states to finland and postage was under 3$. Complete P&P was more. IT can't be so expencive.

@DrBombcrater

Capacitors seems to be ok.

Mobo is with AMD761, so memory bus is 266 MHz. I got elixir 400 MHz ram for cheap and they *seems* to work in real life. memtest-86 says, that it wont support chipset and it gets jammed and draws some carbage in bulk read/write testing. All other tests are ok. So it can be software issue allso (??).

I can get one mobo with domed top for free and it is relativelly easy to change these capacitors. But this very mobo has broken CPU allso, so I think that it is better to leave, since I dont have spare CPUs and memories to broke... mobo can be damaged badly, I think.

Last edited by mlehto on 16-Apr-2005 at 08:30 AM.

How long is the test supposed to take?

I've set it to check 250mb, and it has been running for 24 hours now.

I've run Tonyv's memtest earlier, and it took only about 16hours to test 512mb.

_________________
Site admins are people too..pooff!

@tomazkid

Quote:

I've run Tonyv's memtest earlier, and it took only about 16hours to test 512mb.

must be some of that slow memory...lol

_________________
"The system no longer works " -- Young Anakin Skywalker

I have bought a 512MB SODIMM from GGS-Data.

During the last 4-5 days I have been testing it on and off. Not very much as my time
on the µA1 has been limited these last couple of days. But my initial findings are
really good.

* Memtester reports OK on all tests.
* I have not found ANY application that behaves differently than with the original SODIMM.

This one is a KingMax module which I don't know the model number of.
But I can really recommend buying from Gunne at GGS-Data. He's a really nice
guy and the price is quite ok for this kind of SODIMM.
1295 SEK (168 US$, 140¤) is the price of the SODIMM.


/Harry

_________________
/Harry

[SOLD] µA1-C - 750GX 800MHz - 512MB - Antec Aria case

Avatar by HNL_DK!

@tomazkid

Have you set it to run ONE test run?

memtester 250 1

_________________
/Harry

[SOLD] µA1-C - 750GX 800MHz - 512MB - Antec Aria case

Avatar by HNL_DK!

@Samwel



Quote:

memtester 250 1

I think I just made memtester 250....

is it looping now?

*edit* restarted with memtester 250 1 now.

Last edited by tomazkid on 02-May-2005 at 02:49 AM.

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Site admins are people too..pooff!