Self powered USB drive warning "insufficient available bus power"

[SteCo]

When connecting an external USB self-powered hard drive to my PC, I get errors regarding "insufficient available bus power" in /var/log/messages.

There was a workaround in Ubuntu 8.10 which involved change the value of bConfigurationValue for the relevant drive:-

echo -n 1 > /sys/bus/usb/devices/1-2.3/bConfigurationValue

and restarting ehci-hcd but in 9.04 the restart, "modprobe -r -v ehci-hcd" fails with "FATAL: Module ehci_hcd not found." even though there are log entries in /var/log/messages for ehci-hcd.

Linux farside 2.6.28-11-generic #38-Ubuntu SMP Fri Mar 27 09:00:52 UTC 2009 i686 GNU/Linux

steve@farside:/var/log$ lsb_release -rd
Description: Ubuntu jaunty (development branch)
Release: 9.04

NOTE: ignore the different Device number it is the same device, just take at a different time

steve@farside:/var/log$ lsusb -v
Bus 001 Device 006: ID 05e3:0702 Genesys Logic, Inc. USB 2.0 IDE Adapter
Device Descriptor:
  bLength 18
  bDescriptorType 1
  bcdUSB 2.00
  bDeviceClass 0 (Defined at Interface level)
  bDeviceSubClass 0
  bDeviceProtocol 0
  bMaxPacketSize0 64
  idVendor 0x05e3 Genesys Logic, Inc.
  idProduct 0x0702 USB 2.0 IDE Adapter
  bcdDevice 0.14
  iManufacturer 0
  iProduct 1 USB Storage
  iSerial 0
  bNumConfigurations 1
  Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 32
    bNumInterfaces 1
    bConfigurationValue 1
    iConfiguration 0
    bmAttributes 0xc0
      Self Powered
    MaxPower 96mA
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 0
      bAlternateSetting 0
      bNumEndpoints 2
      bInterfaceClass 8 Mass Storage
      bInterfaceSubClass 6 SCSI
      bInterfaceProtocol 80 Bulk (Zip)
      iInterface 0

[SteCo (ubuntu-bug-online-portfolio)]

The device is external USB driver with a 40GB WD driver fitted inside.

My main concern is the driver isn't recognised as self powered, the lack of ehci-hcd modprode restart is a side issue.

It did work very happily in 8.10 with the work around, but it won't work now.

[Jeremy Foshee (jeremyfoshee)]

Hi SteCo,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/lucid.

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 361952

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]