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[Jennifer Pan <jenpan@xxxxxxxxxx>]

** Information type changed from Private Security to Public Security

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https://bugs.launchpad.net/bugs/1410582

Title:
  [Trusty / Unity] Desktop got unlocked on its own.

Status in Unity:
  In Progress
Status in Unity 7.2 series:
  In Progress
Status in unity package in Ubuntu:
  In Progress

Bug description:
     I have a user reporting an incidence that trusty unity desktop got
  unlocked on its own:

    "Well, I didn't unlock/lock the system before the auto-unlock that morning.
  What I mean is that, on that morning after coming to my desk, I started
  working on my Mac and just press the space bar on my desktop to get the
  monitors woken up. The monitors came up with the locked screen and then
  after a while it got unlocked to my surprise!"

     There was compiz crash file on his system at that time. However, I
  don't have the right debug symbols to which file (or function) it
  crashed into. Here is the top part of the stack trace when I ran
  apport-retrace -s  on his crash file:

  ---------------------------------------------------------------------------------------------------------------
  --- stack trace ---
  #0  0x00007ff17ed06608 in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
  No symbol table info available.
  #1  0x00007ff17ed06cf3 in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
  No symbol table info available.
  #2  0x00007ff17ed04e2d in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
  No symbol table info available.
  #3  0x00007ff17f3fdd02 in g_settings_backend_read (backend=<optimized out>, key=key@entry=0xab011c0 "/org/gnome/desktop/lockdown/disable-lock-screen", expected_type=0x7ff1877135a0 <g_variant_type_info_basic_chars>, default_value=default_value@entry=0) at /build/buildd/glib2.0-2.40.2/./gio/gsettingsbackend.c:701
          value = <optimized out>
  #4  0x00007ff17f401c7b in g_settings_read_from_backend (settings=settings@entry=0x7ff13800a570, key=key@entry=0x7fffdde9c920, user_value_only=user_value_only@entry=0, default_value=default_value@entry=0) at /build/buildd/glib2.0-2.40.2/./gio/gsettings.c:1052
          value = <optimized out>
          fixup = <optimized out>
          path = 0xab011c0 "/org/gnome/desktop/lockdown/disable-lock-screen"
  #5  0x00007ff17f402e7a in g_settings_get_value (settings=0x7ff13800a570, key=0x2087618 "disable-lock-screen") at /build/buildd/glib2.0-2.40.2/./gio/gsettings.c:1092
          skey = {schema = 0x7ff13c017a80, name = 0x4b2fa7c "disable-lock-screen", is_flags = 0, is_enum = 0, strinfo = 0x0, strinfo_length = 0, unparsed = 0x0, lc_char = 0 '\000', type = 0x7ff1877135a0 <g_variant_type_info_basic_chars>, minimum = 0x0, maximum = 0x0, default_value = 0xb9c5b30, ref_count = 0}
          value = <optimized out>
          __FUNCTION__ = "g_settings_get_value"
  -----------------------------------------------------------------------------------------------------------------

     The top part of the trash file when viewed in TextEdit has the information :
  -------------------------------------------------
  ProblemType: Crash
  Architecture: amd64
  CrashCounter: 1
  CurrentDesktop: Unity
  Date: Fri Dec 12 10:16:52 2014
  DistroRelease: Ubuntu 14.04
  ExecutablePath: /usr/bin/compiz
  ExecutableTimestamp: 1405349348
  ProcCmdline: compiz
  --------------------------------------------------

     His system is Ubuntu trusty 14.04.1 LTS. Unity installed
  7.2.3+14.04.20140826-0ubuntu1.0.1 .

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