Re: Athlon SMP blues - kernels 2.4.[9 13 15-pre4]

[Alan Cox]

> The only problem I still have is IDE. I can not run the IDE drive using DMA or the system will hang HARD, usually with the drive access light on. Even with DMA
> disabled it might hang under high IDE usage. I will replace the IDE drive with a SCSI drive soon as the SCSI interface works perfectly and very fast. Early MP
> chipsets had AGP and DMA hardware bugs, but according to AMD errata, the revision in my MoBo should not have these bugs (that doesn't mean it doesn't have them
> though).

The earlier MP chipsets die if you have IDE prefetching enabled (see the
errata doc). I'd be suprised if a BIOS had left that on.