[Bug 909179] Re: [Precise] Installation freezes after "Who are you?" (Ubiquity hangs in ubi-webcam.py)

[miegiel]

I just tried to install ubuntu from the liveCD. I didn't see any option
to make a login/user photo using the webcam (at the "who are you"
screen). Maybe it has been partially removed and whatever remains is
causing the bug?

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Title:
  [Precise] Installation freezes after "Who are you?" (Ubiquity hangs in
  ubi-webcam.py)

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  During installation, after entering the user information, the
  installer slows down to a crawl and the status bar (which says
  "Copying files") stops. Upon switching VT to 2 and back to 7, the
  window contents is not updated. Checking with top, the ubiquity
  process first uses 100 % CPU and eats memory, and after a while it
  uses e 750 M (of 1 G) of real memory and 3.5 G (of 4.0 G) of virtual
  memory causing massive swapping.

  The hang occurs when loading the page titled
  ubiquity/text/webcam_heading_label after the comment '# This page is
  just a UI page' in gtk_ui.py.  This invokes plugin_get_current_page()
  in ubi-webcam.py, where the call self.faceselector.webcam_play() never
  returns.

  In UbiquityDebug.txt, the following error message occurs twice:
  Error opening file for reading: Permission denied
  I have traced the origin to ubi-webcam.py as well, in __init__(): They come from the calls
  Gst.init(sys.argv)
  (sys.argv here resolves to ['/usr/lib/ubiquity/bin/ubiquity'])
  and
  self.faceselector = gtkwidgets.FaceSelector()

  Workaround:

  Before starting the installer, run the following command in a terminal:
  sudo rm /usr/lib/ubiquity/plugins/ubi-webcam.py

  ApportVersion: 1.90-0ubuntu1
  Architecture: amd64
  CasperVersion: 1.296DistroRelease: Ubuntu 12.04
  LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111227)
  Package: ubiquity 2.9.10
  PackageArchitecture: amd64
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 3.2.0-7.13-generic 3.2.0-rc7
  Tags:  precise running-unity ubiquity-2.9.10
  Uname: Linux 3.2.0-7-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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