ad0: FAILURE - WRITE_DMA

[Søren Schmidt]

Mikhail P. wrote:
> On Saturday 09 October 2004 18:26, Søren Schmidt wrote:
> 
>>Hmm, that means that the drive couldn't find the sector you asked for.
>>Now, what has me wondering is that it is the exact sector where we
>>switch to 48bit adressing mode. Anyhow, I've just checked on the old
>>Maxtor preproduktion 48bit reference drive I have here and it crosses
>>the limit with no problems.
>>What controller are you using ? not all supports 48bit mode correctly..
> 
> 
> There's VIA's motherboard (not sure about the model name).
> 
> Here's info regarding ata controller from dmesg:
> atapci0: <VIA 8235 UDMA133 controller> port 0xac00-0xac0f at device 17.1 on 
> pci0
> 
> I will be able to test the drives (the ones which I thought of as "failed") on 
> another board within 10 days or so.

There is definitly something fishy here, since I dont have either the 
disks nor any VIA chips here in the lab I cannot do any testing here.
However I dont know of any problems with the VIA chips in this regard, 
so that leaves the disks for scrutiny. One thing to try is change the 
tripping point where we switch from 28bit mode to 48 bit mode, could be 
a 1 off error in the firmware...

-Søren