Re: serverworks CSB5 IDE: DMA disabled on secondary channel

Alan Cox
2008-07-18T09:38:49Z

> > ata2.01: ATAPI: CD-W540E, 1.0D, max UDMA/33
> > ata2.00: simplex DMA is claimed by other device, disabling DMA
> > ata2.01: simplex DMA is claimed by other device, disabling DMA
> > ata2.00: configured for PIO4
> > ata2.01: configured for PIO4

Disable the pata_acpi driver and let me know if it then behaves. We had a
similar problem with the ATI hardware which lost and messed up its
internal state if pata_acpi was loaded first.