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    SubjectRe: DMA and my Maxtor drive
    On Sat, 21 Oct 2000, Dennis wrote:

    > At 06:43 PM 10/20/2000, wrote:
    > >I get this when DMA is enabled:
    > >
    > >Oct 20 15:39:07 cr753963-a kernel: hdb: timeout waiting for DMA
    > >Oct 20 15:39:07 cr753963-a kernel: hdb: irq timeout: status=0x6e {
    > >DriveReady DeviceFault DataRequest CorrectedError Index }
    > >ide0: reset: success
    > >Oct 20 15:39:07 cr753963-a kernel: hdb: DMA disabled
    > >Oct 20 15:39:07 cr753963-a kernel: ide0: reset: success
    > The same thing happens with big Seagates. It is linux specific. its been a
    > problem for a long time.
    > the problem doesnt occur with Western Digital drives, whatever it is.

    I had a problem like this. The solution was to use an 80 wire
    cable. Even for UDMA/33 and even though it shouldn't be needed. I
    had tried at least two different 40 wire IDE cables, each within
    the UDMA/33 specs.

    I'm guessing that there is a lot of noise in my cabinent and/or
    perhaps the motherboard has a significant internal trace length.
    MB = ASUS P2BD-S. Drive is a Seagate 9.1 or maybe 10GB.

    I was also able to get UDMA working in something like mode 0 with
    the 40 wire cable.


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