Re: DMA disabled after lost interrupt (on ibook)
On Thu, Jul 21, 2005 at 01:16:57AM -0400, Benjamin Herrenschmidt wrote:
}
} > Yes, exactly same machine and same symptoms.
} > i see these messages since a loooong time.
} >
} > it happens when i copy big files or when i do huge & fast files transfert
} > via ftp/scp.
}
} Both of you are using Apple shipped hard disk or you replaced it ? We
} might have to limit the timings to UDMA/4 on these machines it seems...
Forgot to mention that UDMA4 is what it tries to use and fails to use. In
fact, it fails on every UDMA mode. I managed to completely trash my
filesystem when I attempted UDMA5. MDMA0 seems to be the best that works.
Anything higher/better gives the lost interrupt problems.
} Ben.
--Greg
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