Despite all my efforts I could not get DMA disabled on Ubuntu 8.04 using
kernel 2.6.24 and a sparc processor. I tried all the options listed
above (hda=nodma, the obsolete ide=nodma, ide_core.options=nodma, etc.
etc. etc.) and all indications in logs and such were that DMA was
disabled as desired, however the installation would still exhibit the
same symptoms as if DMA was still enabled--random system hangs,
especially while or just following partitioning of the drive.
I have no reason to believe this has been fixed with the latest kernel,
but then I believe more and more distros are moving away from the older
ide component to a new one (don't recall the name).
** Changed in: linux (Ubuntu)
Status: Incomplete => New
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Sparc64 Gutsy Kernel not recognizing ide=nodma
https://bugs.launchpad.net/bugs/159152
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