Hello,
I think this may have already been presented/answered but I am not
certain. I have noticed recently that every so often I will get the
following set of messages, generally right after the bootup sequence
finishes:
ad0: READ command timeout - resetting
ata0: resetting devices .. done
ad0: READ command timeout - resetting
ata0: resetting devices .. done
ad0: READ command timeout - resetting
ata0: resetting devices .. done
ad0: READ command timeout - resetting
ata0-master: WARNING: WAIT_READY active=ATA_ACTIVE_ATA
ad0: trying fallback to PIO mode
ata0: resetting devices .. done
This latest episode is on a 5.0-Current machine cvsupped yesterday, I got
those messages while trying to log in after a reboot.
I dont get any panics or anything, and after the reset to PIO everything
seems to work fine.
ad0 is an IBM Deskstar 22GXP. I recall something about Deskstars resetting
their heads every week as a possible explanation for a similar problem, is
that what this is too?
I would of course prefer to be in DMA mode all the time rather than
PIO. If there is something I can do to fix this I'm all ears.
-Will
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