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[Launchpad Bug Tracker <1233260@xxxxxxxxxxxxxxxxxx>]

Status changed to 'Confirmed' because the bug affects multiple users.

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

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https://bugs.launchpad.net/bugs/1233260

Title:
  05ac:8507 iSight webcam on MacBook Pro does not work

Status in “linux” package in Ubuntu:
  Incomplete
Status in “linux-lowlatency” package in Ubuntu:
  Confirmed

Bug description:
  While in previous installations of Ubuntu the iSight webcam did often work (though I have had some problems in the past), it does not work anymore after a fresh install.
      $ sudo dmidecode -s system-product-name
      MacBookPro5,5
      $ lsusb | grep -i isight
      Bus 001 Device 004: ID 05ac:8507 Apple, Inc. Built-in iSight
      $ dmesg | tail | remove_not_really_interesting_lines
      [150678.498465] Linux video capture interface: v2.00
      [150678.536811] uvcvideo: Probing generic UVC device 4
      [150678.536825] uvcvideo: Found format YUV 4:2:2 (YUYV).
      [150678.536827] uvcvideo: - 160x120 (30.0 fps)
      (...)
      [150678.536834] uvcvideo: - 640x480 (30.0 fps)
      [150678.536837] uvcvideo: Found a Status endpoint (addr 81).
      [150678.536839] uvcvideo: Found UVC 1.00 device Built-in iSight (05ac:8507)
      (...)
      [150678.536902] uvcvideo: Scanning UVC chain: OT 2
      [150678.536904] uvcvideo: Found reference to unknown entity 170.
      [150678.536905] uvcvideo: No valid video chain found.
      [150678.537371] usbcore: registered new interface driver uvcvideo
      [150678.537374] USB Video Class driver (1.1.1)

  I tried using isight-firmware-tools, but the usb id shows that the
  firmware does not need to be loaded (and ift-load says so).

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-30-lowlatency 3.8.0-30.22
  ProcVersionSignature: Ubuntu 3.8.0-30.22-lowlatency 3.8.13.6
  Uname: Linux 3.8.0-30-lowlatency x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: amd64
  Date: Mon Sep 30 18:06:27 2013
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2013-09-03 (27 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MarkForUpload: True
  SourcePackage: linux-lowlatency
  UpgradeStatus: No upgrade log present (probably fresh install)

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