[Fwd: Interrupts question]
olli at lurza.secnetix.de
Thu Jul 20 11:14:29 UTC 2006
Alex Zbyslaw wrote:
> Oliver Fromme wrote:
> > From your dmesg excerpt it seems that you have at least
> > three USB controllers in that machine. Depending on your
> > requirements, it might make sense to disable all of them
> > _except_ one, and then connect your USB devices to that
> > one controller (using additional USB hubs if necessary).
> > Of course, the controller that you keep enabled should be
> > the one that's causing the least problems (which seems to
> > be uhci1 "USB-B" in your case, if I read your first email
> Thanks for the suggestion. Can you tell me how to disable specific
> controllers? Were you thinking BIOS? or FreeBSD?
I meant to say to disable them in the BIOS. I'm afraid
there is no generic way to disable specific devices in
> Can device.hints do this? uhci man page is somewhat brief.
No, uhci doesn't use hints (in theory, however, it wouldn't
be difficult to add support for "hints.uhci.X.disabled", I
think). Most of the device hints can only be used for legacy
(non-PnP) ISA devices.
> I'm not sure which of those controllers I might actually need and it
> might be none of them. The USB requirement is because there is a DRAC
> (remote console) card which simulates a USB keyboard/mouse and offhand
> I'm not sure what they are connected to.
Should be easy to find out. Just look at dmesg or the
output from "usbdevs -v". You should be able to see to
which controller the ums/ukbd of your remote console are
Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing
Dienstleistungen mit Schwerpunkt FreeBSD: http://www.secnetix.de/bsd
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