(no subject)

[Thomas Palm]

-> moved from comp.os.linux.hardware:

Hi,

I still have problems with the VIA Apollo southbridge (Kernel 2.4.2 (Redhat
7.1) and Kernel 2.4.4).

In rare circumstances,
there ist still file-corruption. I use an ASUS A7V133 (Revision 1.05,
including Sound + Raid). My tests:

- copying 4 GB of CD-ISO-Files from Promise Secondary Master to Promise
Secondary Slave. After that "diff -r srcdir destdir". Test was
succesfull, no differs, even after 15 executions

-  (same test with small files)
copying 4GB of small files (50 to 500 KB) from Promise Secondary Master
to Promise Secondary Slave.
1st run of "diff -r srcdir destdir" -> no differs
2nd run of "diff -r srcdir destdir" -> 2 files differ
3rd run of "diff -r srcdir destdir" -> 1 file differs
4th run of "diff -r srcdir destdir" -> 1 file differs
5th run of "diff -r srcdir destdir" -> no differs

- I d did the same tests on the Promise Primary, same results. Also on
the the VIA Secondary but my feeling is that there are even more
corruptions.

I stripped the machine to the bone, PCI-VGA only, same results.

I cannot say for sure, but before I stripped my adaptec SCSI-Card, there
may even been "differs" after copying from SCSI-Disk to SCSI-Disk. Off
course I thought other parts of my Hardware was flacky (e.g. RAM...),
but I swapped everything: RAM from different manufacturers, IDE-Cables,
CPU (Duron 900 -> Duron 850), VGA-Card, I tried the most conservative
Setting in the A7V-Bios, Bios-Update 1003 -> 1004 -> 1004 beta3,
UDMA6->UDMA2 all to no avail.

Any hints?
 <TP>

Post a follow-up to this message

Message 2 in thread 
Von:Bobby D. Bryant (bdbryant@mail.utexas.edu)
Betrifft:Re: VIA Apollo Southbridge again 
Newsgroups:comp.os.linux.hardware
Datum:2001-05-20 09:45:08 PST 
 



Thomas Palm wrote:

> I still have problems with the VIA Apollo southbridge (Kernel 2.4.2
(Redhat 7.1) and Kernel 2.4.4).

There are known to be bugs in the VIA chipsets, but you might want to report
this to
linux-kernel@vger.kernel.org anyway.

Bobby Bryant
Austin, Texas




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Re: your mail

[Lorenzo Marcantonio]

On Mon, 21 May 2001, Thomas Palm wrote:

> there ist still file-corruption. I use an ASUS A7V133 (Revision 1.05,
> including Sound + Raid). My tests:
> 1st run of "diff -r srcdir destdir" -> no differs
> 2nd run of "diff -r srcdir destdir" -> 2 files differ
> 3rd run of "diff -r srcdir destdir" -> 1 file differs
> 4th run of "diff -r srcdir destdir" -> 1 file differs
> 5th run of "diff -r srcdir destdir" -> no differs

Could you check WHERE the file differ and WHERE the data come from ?

I've got the same mobo AND some nasty DAT tape corruption problems...
(also, VERY rarely, on the CD burner). I've got all on SCSI, but if it's
the DMA troubling us...

				-- Lorenzo Marcantonio

Re: your mail

[Thomas Palm]

1. The corrupted files have the same length but differ (I cannot say on what
bit-position)
2. I reproduced the problem while burning CD from SCSI-Disk to
SCSI-CD-Burner!!!
-> It´s definetly not a (single?) IDE-Problem

Burning CD (on slow 4x speed) seems to initialize many small transfers
(instead of a smooth stream)(same as copying many small files) on PCI/DMA wich
generate the same problems!!!



> On Mon, 21 May 2001, Thomas Palm wrote:
> 
> > there ist still file-corruption. I use an ASUS A7V133 (Revision 1.05,
> > including Sound + Raid). My tests:
> > 1st run of "diff -r srcdir destdir" -> no differs
> > 2nd run of "diff -r srcdir destdir" -> 2 files differ
> > 3rd run of "diff -r srcdir destdir" -> 1 file differs
> > 4th run of "diff -r srcdir destdir" -> 1 file differs
> > 5th run of "diff -r srcdir destdir" -> no differs
> 
> Could you check WHERE the file differ and WHERE the data come from ?
> 
> I've got the same mobo AND some nasty DAT tape corruption problems...
> (also, VERY rarely, on the CD burner). I've got all on SCSI, but if it's
> the DMA troubling us...
> 
> 				-- Lorenzo Marcantonio
> 
> 

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