Re: DMA CRC errors with SiS chipset and notebook drive

[Alan Cox]

> Aug  9 07:41:29 monet kernel: ata1.00: limiting speed to UDMA/66:PIO4
> Aug  9 07:41:29 monet kernel: ata1.00: exception Emask 0x0 SAct 0x0 SErr
> 0x0 action 0x2
> Aug  9 07:41:29 monet kernel: ata1.00: (BMDMA stat 0x64)
> Aug  9 07:41:29 monet kernel: ata1.00: cmd
> c8/00:08:fb:7c:a1/00:00:00:00:00/e0 tag 0 cdb 0x12 data 4096 in
> Aug  9 07:41:29 monet kernel:          res
> 51/84:00:00:00:00/00:00:00:00:00/e0 Emask 0x10 (ATA bus error)
> Aug  9 07:41:29 monet kernel: ata1: soft resetting port
> Aug  9 07:41:29 monet kernel: ata1.00: configured for UDMA/66
> Aug  9 07:41:29 monet kernel: ata1.01: configured for UDMA/33
> Aug  9 07:41:29 monet kernel: ata1: EH complete

Drops to UDMA33 for 40 wire cable.


Looks to me like your cabling is out of spec or you have electrical noise
problems.

Alan
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