It seems John Hay wrote:
> Hi,
>
> I have been trying to install yesterday's 4.0 snap on a no-name brand
> motherboard with the VIA chipset, but I'm running in some problems. I
> suspect there is a problem with the DMA. The error I'm getting when the
> disk is newfs'ed is a repeating:
>
> ad0: WRITE command timeout - resetting
> ata0: resetting devices .. done
> ad0: WRITE command timeout - resetting
> ata0: resetting devices .. done
> ...
>
> It seems that it is just going on and on. Shouldn't it back down to non
> DMA mode after a while? Is there a way to disable the DMA on the install
> floppies?
It should back down after 3 retries... But is is 3 retries pr request,
so say it gets through on the 2 retry each time this will continue..
I dont know if there is access to the sysctl knobs from the emergency
shell, but that would be a solution...
> Part of the probe looks like this: (written down by hand)
>
> atapci0: <VIA 82C586 ATA33 controller> port 0xe000 - 0xe00f at device 7.1 on pci0
> ata0: at 0x1f0 irq 14 on atapci0
> ...
> ad0: 6204MB <ST36531A> [13446/15/63] at ata0-master using UDMA33
Hmm, wierd, did this hardware run FreeBSD before ??
-Søren
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