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[Bug 1264472] Re: 05ac:12a9 [Medion E7218] Can't pair iPad / iOS7 with Ubuntu via USB


With latest upstream kernel, linux-image-3.13.0-031300rc7, the system
fails to load init, so I'm unable to tell if this bug applies.

The following message appears in the console during the boot:

Starting init: /bin/sh exists but couldn't execute it (error -8)
Kernel panic - not syncing: No working init found.

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  05ac:12a9 [Medion E7218] Can't pair iPad / iOS7 with Ubuntu via USB

Status in “libimobiledevice” package in Ubuntu:
Status in “linux” package in Ubuntu:

Bug description:
  Here, I am trying to connect my ipad 2 running iOS 7.0.4 to a laptop running Ubuntu 12.04 via usb. After connecting the two devices via USB, Ubuntu displays the following message in a popup:
      The device 'Stephens iPad' is locked. Enter the passcode on the device and click 'Try again'.
  A second later on the ipad a modal popup appears saying something like the following in English:
      Trust this computer?
      Trust / Don't trust

  After clicking 'Trust', a popup appears on Ubuntu:
      Unable to mount Stephens iPad
      DBus error org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)

  On the ipad, the modal popup reappears. Clicking 'Trust' again gives the same result as before. Via dmesg, the following entries can be seen:
      [  282.768166] usb 1-1.2: new high-speed USB device number 4 using ehci_hcd
      [  289.694066] usb 1-1.2: USB disconnect, device number 4
      [  289.957594] usb 1-1.2: new high-speed USB device number 5 using ehci_hcd
      [  293.528294] usb 1-1.2: USB disconnect, device number 5
      [  293.727877] usb 1-1.2: new high-speed USB device number 6 using ehci_hcd
      [  342.606892] usb 1-1.2: USB disconnect, device number 6

  Also occurs in Trusty 2014-01-02:
  ***    Unable to mount iPad. Unhandled Lockdown error (-12)

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-57-generic 3.2.0-57.87
  ProcVersionSignature: Ubuntu 3.2.0-57.87-generic 3.2.52
  Uname: Linux 3.2.0-57-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: amd64
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
   /dev/snd/controlC0:  stkn       2039 F.... pulseaudio
   country DE:
    (2400 - 2483 @ 40), (N/A, 20)
    (5150 - 5250 @ 40), (N/A, 20), NO-OUTDOOR
    (5250 - 5350 @ 40), (N/A, 20), NO-OUTDOOR, DFS
    (5470 - 5725 @ 40), (N/A, 26), DFS
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf7f00000 irq 49'
     Mixer name	: 'Intel CougarPoint HDMI'
     Components	: 'HDA:10ec0269,17c010e8,00100100 HDA:80862805,80860101,00100000'
     Controls      : 29
     Simple ctrls  : 13
  Date: Fri Dec 27 10:09:43 2013
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=221507c4-dcf9-491f-9a91-a67e0bb44c00
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MachineType: MEDION E7218
  MarkForUpload: True
   PATH=(custom, no user)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-57-generic root=UUID=78b87c2f-a47c-4216-8b83-554c5fdcc1d1 ro quiet splash vt.handoff=7
   linux-restricted-modules-3.2.0-57-generic N/A
   linux-backports-modules-3.2.0-57-generic  N/A
   linux-firmware                            1.79.9
  SourcePackage: linux
  StagingDrivers: rts5139 mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/26/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0.30
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: E7218
  dmi.board.vendor: MEDION
  dmi.board.version: To be filled by O.E.M.
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: MEDION
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0.30:bd04/26/2011:svnMEDION:pnE7218:pvrTobefilledbyO.E.M.:rvnMEDION:rnE7218:rvrTobefilledbyO.E.M.:cvnMEDION:ct10:cvrToBeFilledByO.E.M.:
  dmi.product.name: E7218
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: MEDION

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