amd64/138882: Can't install FreeBSD 7.2

Torfinn Ingolfsen torfinn.ingolfsen at
Fri Sep 18 08:27:03 UTC 2009

On Thu, 17 Sep 2009 13:00:16 +0000 (GMT)
John Baldwin <jhb at> wrote:

>  Try turning off legacy USB support in your BIOS.  I have a machine
> at home that has run 6.x and 7.x/i386 that has this same issue.  The 
>  problem appears to be that ohci_reset() doesn't fully clear the
> state of the ohci(4) controller and when the driver first probes it
> sees a completed USB request that was the last request initiated by
> the BIOS. 

Or if that doesn't work (I have a M2A-VM HDMI, but I don't know how old
a BIOS he has) he can remove all usb attached devices during boot.
For some reason, most devices work fine when plugged in after the
machine has booted.
(Some devices will panic the machine, but that is another story)

Torfinn Ingolfsen

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