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No DMA for me?

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Kilian A. Foth

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Feb 16, 2004, 9:58:17 AM2/16/04
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I have tried by al means I can imagine to turn on DMA for the hard
disk in my shiny new SuSE computer, and instead I get
"dma_timer_expiry: dma status == 0x21". In fact, unless I boot wth
ide=nodma, I can't get the system up at all, it always hangs
soon afterwards with "hda: lost interrupt".

I have tried other disks on that controller, and they do DMA just fine
(I don't have another 160G job for comparison, though). I have also
changed every BIOS setting known to man, and even tried other kernels
(2.4.24, 2.6.2) -- no help.

My new disk is a new Samsung 160GB. Is there some issue with DMA on
huge disks that I have to work around? Or is it possible that a hard
disk works perfectly except that it cannot set up DMA although it
claims to supports UDMA5?


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