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[Launchpad Bug Tracker <53972@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/53972

Title:
  Via USB and ehci_hcd bug: USB not recognized - IRQ issue

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  Binary package hint: linux-image-2.6-386

  On Ubuntu Dapper Drake, with all updates applied, USB devices are not
  recognized anymore (they used to when Dapper was freshly released).

  Problem may come from ehci_hcd, as removing this module (modprobe -r
  ehci_hcd) fix the issue, but then USB devices are stuck on 1.1 low
  speed standard.

  Another solution seem to set acpi=noirq at boot time, but didn't fix
  the problem for me (it did for some other people however).

  More googling showed me that this problem is ongoing and has appeared
  in the past as well. Some kernel issue here.

  Here is what happens when I plug a USB device in (dmesg output):

  [17185074.604000] usb 4-1: new high speed USB device using ehci_hcd and address 2
  [17185075.604000] ehci_hcd 0000:00:10.3: Unlink after no-IRQ?  Controller is probably using the wrong IRQ.
  [17185086.148000] usb 4-1: device not accepting address 2, error -110
  [17185086.260000] usb 4-1: new high speed USB device using ehci_hcd and address 3

  
  "Controller is probably using the wrong IRQ" <- There we go: IRQ problem. Still, set acpi=noirq at boot time doesn't fix anything.

  
  Here's my lspci output:

  ced@chasiewbao:~$ lspci 
  0000:00:00.0 Host bridge: VIA Technologies, Inc. VT8378 [KM400/A] Chipset Host Bridge
  0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI Bridge
  0000:00:09.0 Network controller: RaLink Ralink RT2500 802.11 Cardbus Reference Card (rev 01)
  0000:00:0a.0 CardBus bridge: O2 Micro, Inc. OZ601/6912/711E0 CardBus/SmartCardBus Controller (rev 20)
  0000:00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80)
  0000:00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80)
  0000:00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80)
  0000:00:10.3 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 82)
  0000:00:11.0 ISA bridge: VIA Technologies, Inc. VT8235 ISA Bridge
  0000:00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
  0000:00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 50)
  0000:00:11.6 Communication controller: VIA Technologies, Inc. AC'97 Modem Controller (rev 80)
  0000:00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 74)
  0000:01:00.0 VGA compatible controller: VIA Technologies, Inc. VT8378 [S3 UniChrome] Integrated Video (rev 01)

  
  More information about this bug can be found on ubuntu forums at http://www.ubuntuforums.org/showthread.php?p=1220750

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