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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

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** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1077461

Title:
  USB MTP device disconnected automatically

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  On connecting an android device in MTP mode to my ubuntu laptop, it
  showed up as an MTP device. After some time it stopped showing the
  device. On connecting and dis-connecting the device multiple times,
  dmesg doesn't show any output (Didn't get the dmesg output this time).
  Even after rebooting the device is not detected. Tried reboot multiple
  times. dmesg shows that the device was detected and immediately
  disconnected.

  [    2.505545] usb 2-1.4: new high-speed USB device number 4 using ehci_hcd
  [    2.599906] usb 2-1.4: New USB device found, idVendor=04e8, idProduct=6860
  [    2.599921] usb 2-1.4: New USB device strings: Mfr=2, Product=3, SerialNumber=4
  [    2.599932] usb 2-1.4: Product: SAMSUNG_Android
  [    2.599939] usb 2-1.4: Manufacturer: SAMSUNG
  [    2.599946] usb 2-1.4: SerialNumber: 4df1a23921e85f5d
  [    2.652289] usb 2-1.4: USB disconnect, device number 4

  Same thing works on windows dual boot on same machine. So don't think
  it is a hardware issue. Also had the same issue on my office machine
  as well. Was working properly on 12.04 on office machine.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: linux-image-3.5.0-18-generic 3.5.0-18.29
  ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7
  Uname: Linux 3.5.0-18-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.6.1-0ubuntu6
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  sree       2640 F.... pulseaudio
   /dev/snd/controlC0:  sree       2640 F.... pulseaudio
  Date: Sun Nov 11 01:16:30 2012
  HibernationDevice: RESUME=/dev/sda6
  InstallationDate: Installed on 2010-10-14 (758 days ago)
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
  MachineType: LENOVO 20041
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=en_US:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-18-generic root=UUID=3e51c732-6111-4252-a7c3-9a4697c1ace6 ro vga=792 splash crashkernel=384M-2G:64M,2G-:128M splash
  RelatedPackageVersions:
   linux-restricted-modules-3.5.0-18-generic N/A
   linux-backports-modules-3.5.0-18-generic  N/A
   linux-firmware                            1.95
  SourcePackage: linux
  UpgradeStatus: Upgraded to quantal on 2012-09-07 (64 days ago)
  dmi.bios.date: 01/29/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 29CN17WW(V1.05)
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Base Board Product Name
  dmi.board.vendor: LENOVO
  dmi.board.version: Base Board Version
  dmi.chassis.asset.tag: Chassis Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnLENOVO:bvr29CN17WW(V1.05):bd01/29/2010:svnLENOVO:pn20041:pvrLenovoG460:rvnLENOVO:rnBaseBoardProductName:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
  dmi.product.name: 20041
  dmi.product.version: Lenovo G460
  dmi.sys.vendor: LENOVO

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