UDMA ICRC error

[Ramiro Aceves]

Peter Risdon wrote:
> On Wed, 2005-02-16 at 06:31 -0800, Rob wrote:
> 
>>Ramiro Aceves wrote:
>>
>>>I have read that others had this problem before. I
>>>just write this report for you to know.
>>>
>>>When I installed FreeBSD 5.3 R, I get some errors
>>>like this, but I could end the install:
>>>
>>>ad0: WARNING -READ_DMA UDMA ICRC error (retrying 
>>>        request) LBA=5313599
>>>ad0: FAILURE -READ_DMA status=51<READY,DSC,ERROR>
>>>        error=84 >ICRC,ABORTED>
>>>spec_getpages:(ad0s1a) I/O read failure: (error=5)
>>>................
>>>
>>>I have solved the problem disabling DMA:
>>>hw.ata.ata_dma="0"
>>>
>>>(I previously tried disabling ACPI with no success,
>>>and playing with BIOS LBA, LARGE, NORMAL settings
>>>at the BIOS with no success).
>>>
>>>Now ad0: works in PIO4 mode and everything is fine,
>>>previously , it was UDMA33. Now there are no errors.
>>
>>There's you and me now. I have this problem with two
>>of my PCs. I don't know yet of anybody else who has
>>these problems.
>>
>>It's indeed a serious problem, but too few people
>>running 5.3 seem to suffer from this.
> 
> 
> No, it's a known problem and I filed a pr about it a while back. So far
> as I know, there's been no action on the pr and disabling dma is the
> only workaround.
> 
>>Have you tried with 4.11?
>>I bet that would not generate these problems.
> 
> 
> Agreed.
> 
> Peter.
> 
> 
> 

Hi Peter!

Thank you very much for the usefull information.
We will keep in touch for any news.

Ramiro.