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[Launchpad Bug Tracker <954704@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/954704

Title:
  USB device disconnect leads to all devices on hub disconnecting

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  Steps to reproduce:

  1. Connect a pl2303 USB to serial adapter to the system
  2. Connect a device that generates some serial data periodically
  3. Open minicom and view data from device
  4. Close minicom but leave device connected to the serial adapter
  (some time passes)
  5. At some point, when the device sends data, the serial USB device disconnects, and takes down all devices on the internal hub.

  Here's what's in dmesg:

  [42835.631467] usb 1-1.6: USB disconnect, device number 8
  [42835.631634] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0
  [42835.631646] pl2303 1-1.6:1.0: device disconnected
  [42835.866365] usb 1-1.6: new full speed USB device number 9 using ehci_hcd
  [42835.958021] ehci_hcd 0000:00:1a.0: fatal error
  [42835.961893] ehci_hcd 0000:00:1a.0: HC died; cleaning up
  [42835.964703] ehci_hcd 0000:00:1a.0: force halt; handshake f8426024 00004000 00004000 -> -110
  [42835.964706] ehci_hcd 0000:00:1a.0: HC died; cleaning up
  [42835.973864] usb 1-1.6: device descriptor read/all, error -108
  [42835.973870] hub 1-1:1.0: cannot disable port 6 (err = -19)
  [42835.973879] hub 1-1:1.0: cannot reset port 6 (err = -19)
  [42835.973882] hub 1-1:1.0: cannot disable port 6 (err = -19)
  [42835.973887] hub 1-1:1.0: cannot reset port 6 (err = -19)
  [42835.973889] hub 1-1:1.0: cannot disable port 6 (err = -19)
  [42835.973894] hub 1-1:1.0: cannot reset port 6 (err = -19)
  [42835.973897] hub 1-1:1.0: cannot disable port 6 (err = -19)
  [42835.973900] hub 1-1:1.0: unable to enumerate USB device on port 6
  [42835.973902] hub 1-1:1.0: cannot disable port 6 (err = -19)
  [42835.973907] usb 1-1.1: USB disconnect, device number 3
  [42835.974005] ftdi_sio ttyUSB1: FTDI USB Serial Device converter now disconnected from ttyUSB1
  [42835.974012] ftdi_sio 1-1.1:1.0: device disconnected
  [42835.974059] usb 1-1.2: USB disconnect, device number 4
  [42836.065807] usb 1-1.3: USB disconnect, device number 5
  [42836.161569] usb 1-1.4: USB disconnect, device number 6
  [42836.225349] usb 1-1.5: USB disconnect, device number 7
  [42836.392778] usb 1-1: USB disconnect, device number 2

  == end of what's in dmesg ==

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: linux-image-3.0.0-16-generic-pae 3.0.0-16.29
  ProcVersionSignature: Ubuntu 3.0.0-16.29-generic-pae 3.0.20
  Uname: Linux 3.0.0-16-generic-pae i686
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu4
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC3:  sconklin   2170 F.... pulseaudio
   /dev/snd/controlC2:  sconklin   2170 F.... pulseaudio
   /dev/snd/controlC0:  sconklin   2170 F.... pulseaudio
   /dev/snd/controlC1:  sconklin   2170 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xc1360000 irq 43'
     Mixer name	: 'Intel CougarPoint HDMI'
     Components	: 'HDA:10ec0885,80860021,00100103 HDA:80862805,80860101,00100000'
     Controls      : 50
     Simple ctrls  : 25
  Card1.Amixer.info:
   Card hw:1 'Headset'/'Plantronics Plantronics Headset at usb-0000:00:1a.0-1.2, full speed'
     Mixer name	: 'USB Mixer'
     Components	: 'USB047f:0ca1'
     Controls      : 8
     Simple ctrls  : 6
  Card2.Amixer.info:
   Card hw:2 'CinemaTM'/'Microsoft Microsoft® LifeCam Cinema(TM) at usb-0000:00:1a.0-1.3, high speed'
     Mixer name	: 'USB Mixer'
     Components	: 'USB045e:075d'
     Controls      : 2
     Simple ctrls  : 1
  Card2.Amixer.values:
   Simple mixer control 'Mic',0
     Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
     Capture channels: Mono
     Limits: Capture 0 - 56
     Mono: Capture 0 [0%] [-20.00dB] [on]
  Card3.Amixer.info:
   Card hw:3 'NVidia'/'HDA NVidia at 0xc1080000 irq 17'
     Mixer name	: 'Nvidia GPU 14 HDMI/DP'
     Components	: 'HDA:10de0014,10de0101,00100100'
     Controls      : 16
     Simple ctrls  : 4
  Date: Tue Mar 13 21:57:52 2012
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  MachineType: Intel Corporation SandyBridge Platform
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-16-generic-pae root=UUID=42c2cb77-b171-4c3d-9fc7-2b1eac9b5f45 ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-16-generic-pae N/A
   linux-backports-modules-3.0.0-16-generic-pae  N/A
   linux-firmware                                1.60
  RfKill:
   0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  SourcePackage: linux
  StagingDrivers: mei
  UpgradeStatus:
   Upgraded to /usr/bin/python: /home/sconklin/libeagle/libcrypto.so.1.0.0: no version information available (required by /usr/bin/python)
   /usr/bin/python: /home/sconklin/libeagle/libssl.so.1.0.0: no version information available (required by /usr/bin/python)
   oneiric on 2011-12-06 (98 days ago)
  dmi.bios.date: 10/06/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: ASNBCPT1.86C.0043.P04.1010061856
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: LosLunas CRB
  dmi.board.vendor: Intel Corporation
  dmi.board.version: To be filled by O.E.M.
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrASNBCPT1.86C.0043.P04.1010061856:bd10/06/2010:svnIntelCorporation:pnSandyBridgePlatform:pvrTobefilledbyO.E.M.:rvnIntelCorporation:rnLosLunasCRB:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: SandyBridge Platform
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Intel Corporation

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