mount --bind /dev/bus /proc/bus or
mount --bind /dev/bus/usb /proc/bus/usb
will make /proc/bus/usb accessible /proc/bus/usb for some hardware (although 
this will cause the other directories under /proc/bus to be hidden). So you 
should umount again, after use.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/488274

This idiot may not know how to properly manage the progression of
Ubuntu, but he seems to know away around this problem. Just going to
show that a little intelligence is a dangerous thing.


Scott James Remnant (Canonical) wrote on 2010-03-19:    #25

On Fri, 2010-03-19 at 02:20 +0000, Maxim wrote:

> >mount --bind /dev/bus /proc/bus
> >ln -s /sys/kernel/debug/usb/devices /proc/bus/usb/devices
>
> edonia, thank you.
> Command "mount --bind /dev/bus /proc/bus" eliminate all directories in 
> /proc/bus. And it doesn't help with VirtualBox. But thank you anyway.
>
You can get around this too ;-)

  mkdir /dev/bus/input /dev/bus/pccard /dev/bus/pci
  (basically anything you see under /proc/bus)

  mount --bind /proc/bus/input /dev/bus/input
  mount --bind /proc/bus/pccard /dev/bus/pccard
  mount --bind /proc/bus/pci /dev/bus/pci

  mount --bind /dev/bus/usb /proc/bus/usb

  ln -s /sys/kernel/debug/usb/devices /proc/bus/usb/devices

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https://bugs.launchpad.net/bugs/507824

Title:
  Linux kernel 2.6.31-18 in Kubuntu 9.10 Karmic Koala doesn't support
  usbfs.

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