Red Hat Bugzilla – Bug 115708
usb subsystem for 2.6.2-1.79 does not recognize usb devices
Last modified: 2007-11-30 17:10:36 EST
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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040115
Description of problem:
USB devices do not seem to be recognized by kernel-2.6.2-1.79. With
the same system using kernel-2.4.22-1.2166 all of the devices are
recognized and work flawlessly. Devices include a scanner, digital
camera, usb flash drive, logitech webcam, and a usb mouse.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Try use any usb device with a 2.6.x kernel
2. Devices are not recognized
Actual Results: USB devices are not recognized and cannot be used.
Expected Results: USB devices would be usable as they are in 2.4.x
Using usbview yields an error messages that /proc/bus/usb/devices
cannot be accessed because it does not exist. However, I do not know
if this directory has changed with the upgrade to 2.6.x kernels.
Do you have an 'alias usb-controller <something>' in /etc/modprobe.conf?
Yes, I have:
alias usb-controller usb-uhci
alias usb-controller1 ehci-hcd
cannot open /proc/bus/usb, No such file or directory (2)
Only input and pci folders are in the /proc/bus directory.
I tried commenting the two out, but that had no effect. lsusb produces
the same error.
that's it then; it's supposed to be
uhci-hcd not usb-uhci ....
Indeed the change solved the problem. However, the module is not being
automatically loaded during boot-up. I had to manually load the
module, which then allowed me to access the usb devices.
Shouldn't kudzu take care of the uhci-hcd entry if there has been a
naming change between kernels 2.4 and 2.6?
*** Bug 115685 has been marked as a duplicate of this bug. ***
This appears to have been fixed long ago and should be closed.