Bug 174820 - 2.6 kernels don't load USB devices
2.6 kernels don't load USB devices
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
i386 Linux
medium Severity high
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Assigned To: Kernel Maintainer List
Brian Brock
Depends On:
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Reported: 2005-12-02 10:24 EST by michaelw
Modified: 2007-11-30 17:11 EST (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2005-12-06 11:52:13 EST
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RHEL 7.3 requirements from Atomic Host:
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Description michaelw 2005-12-02 10:24:49 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20050922 Fedora/1.7.12-1.3.1

Description of problem:
No USB devices will load on Compaq Presario R3000/R3306US under 2.6 kernels.  dmesg shows only one of three controllers is initialized, and it appears in /proc/bus/usb/devices.  No USB devices generate hotplug events or ever appear there.
The EHCI controller initializes;  each of the OHCI controllers fails with the messages:
"ohcd_hcd 0000:00:02.x: USB HC takeover failed (BIOS/smm BUG)"
"ohcd_hcd: probe of 0000:00:02.x failed with error -16"
where 'x' = '0' or '1'.

Version-Release number of selected component (if applicable):
Any 2.6 kernel tested

How reproducible:

Steps to Reproduce:
1. Boot with 2.6 kernel


Actual Results:  No USB connectivity.

Expected Results:  All USB controllers should have initialized and USB devices should be recognized.

Additional info:

Booting with 7.2 install/rescue CD (kernel 2.4.7-10BOOT) or one of several Knoppix bootable CDs with 2.4 kernels results in USB devices working. Booting installed kernel (2.6.12-1.1381_FC3), FC3 install/rescue CD, or FC4 rescue CD results in no USB.
I've rated severity as "High" because I can't access needed devices and I need to get fully functional on this computer, having lost a work week to this install.  Also because there must surely be others trying to use Linux on other machines with this hardware and just giving up.
Comment 1 michaelw 2005-12-06 11:48:10 EST
Much additional research indicates the problem relates to the 2.6 kernel and the
BIOS in these computers.  I would still consider this a bug because the problem
does not manifest under 2.4 kernels.

Fix #1: add these lines to modules.conf and modprobe.conf:

options usb_ohci no_handshake=1
options ohci_hcd no_handshake=1

Only the second one may be needed for FC3; the first one didn't work but may on
some systems.

Fix #2:  download BIOS update from hp.com for your R3000 model.  You will need a
Windows/DOS computer to unpack it and create the BIOS update disk.  I haven't
tried this but some report it to work.

Surely there's a better method for getting this information to users than hours
spent trying to find the right words to type into Google...
Comment 2 Pete Zaitcev 2005-12-06 14:26:27 EST
Michael, I could have written a comment to the tune of: "in most circumstances
this is indeed a BIOS bug, and the printk() is there to alert you to the fact."
I didn't do it because there's always a (very small) possibility that something
wasn't right in the takeover code of ohci-hcd.

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