Re: usb devices do not appear in dmesg in FC4

On Mon, 30 Jan 2006 05:29:56 GMT, John McFee staggered into the Black
Sun and said:
> I have an HP Pavilion a1130n computer with an AMD 3500+ 64
> Linux 2.6.14-1.1656_FC4 #1 Thu Jan 5 22:13:22 EST 2006 i686 athlon
>
> If I run Windows XP, my usb ports (I have 3 front, 2 back) all work
> fine and my usb printer does too. When I run Fedora, none of the USB
> devices are recognized.
>
> I have a /proc/bus/usb directory but there is nothing in it.
> The HAL daemon is running.

[ snip lsmod output ]

Hmm, ohci_hcd and ehci_hcd are loaded, but usbcore isn't. Unless for
unknown reasons, FC4 had usbcore built in but everything else as a
module. Try modprobing usbcore. If that doesn't work, do "/sbin/lspci
-vv | grep -A6 HCI" [0] and see what you get from that. It should look
sort of like this:

00:07.2 USB Controller: FOOBAR Corporation 1234/56 USB (rev 01) (prog-if
00 [OHCI])
Control: [stuff]
Status: [stuff]
Interrupt: pin D routed to IRQ 19

....if the Interrupt says "pin X routed to IRQ 0" then there's a problem.
Fiddle with the BIOS settings (change the "OS Installed" from "non-PNP"
to "PNP" or vice versa) to fix that. If it says "UHCI" in the output,
you have a UHCI chipset, not an OHCI chipset, and you need to rmmod
ohci_hcd and modprobe uhci_hcd.

It might be useful to see the output of "dmesg | grep -1 -i usb" as
well.

[0] For some reason, /sbin is not in any user's default PATH on many
Redhat-derived distros, hence the full name here.

--
Matt G|There is no Darkness in Eternity/But only Light too dim for us to see
Brainbench MVP for Linux Admin / mail: TRAP + SPAN don't belong
http://www.brainbench.com / "He is a rhythmic movement of the
-----------------------------/ penguins, is Tux." --MegaHAL
.