Bug#585094: gnome-control-center: gnome-display-properties wrongly detects external monitor connected

[Olivier Berger]

Package: gnome-control-center
Version: 1:2.30.1-1
Severity: normal

Hi.

>From time to time, gnome-display-properties will detect in a wrong way the presence of an external monitor (running a laptop with internal LCD and external VGA connector).

Even though there's none connected, the display then switches to 2-screens large desktop, and unfortunately displays current panels and windows on the hidden part, leaving the laptop's LCD screen empty (but desktop icons).

It's then a pain to start gnome-display-properties again from nautilus, to be able to re-detect a single screen mode again.

FYI, lspci reports :
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)

Thanks in advance.

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-3-686 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gnome-control-center depends on:
ii  capplets-data               1:2.30.1-1   configuration applets for GNOME - 
ii  desktop-file-utils          0.15-2       Utilities for .desktop files
ii  gnome-desktop-data          2.30.0-2     Common files for GNOME desktop app
ii  gnome-icon-theme            2.30.3-1     GNOME Desktop icon theme
ii  gnome-menus                 2.30.0-1     an implementation of the freedeskt
ii  gnome-settings-daemon       2.30.1-1     daemon handling the GNOME session 
ii  libatk1.0-0                 1.30.0-1     The ATK accessibility toolkit
ii  libc6                       2.10.2-9     Embedded GNU C Library: Shared lib
ii  libcairo2                   1.8.10-4     The Cairo 2D vector graphics libra
ii  libcanberra-gtk0            0.24-1       Gtk+ helper for playing widget eve
ii  libcanberra0                0.24-1       a simple abstract interface for pl
ii  libdbus-glib-1-2            0.86-1       simple interprocess messaging syst
ii  libebook1.2-9               2.28.3.1-1   Client library for evolution addre
ii  libfontconfig1              2.8.0-2.1    generic font configuration library
ii  libfreetype6                2.3.11-1     FreeType 2 font engine, shared lib
ii  libgconf2-4                 2.28.1-3     GNOME configuration database syste
ii  libglib2.0-0                2.24.1-1     The GLib library of C routines
ii  libgnome-desktop-2-17       2.30.0-2     Utility library for loading .deskt
ii  libgnome-window-settings1   1:2.30.1-1   Utility library for getting window
ii  libgnomekbd4                2.30.1-2     GNOME library to manage keyboard c
ii  libgtk2.0-0                 2.20.1-1     The GTK+ graphical user interface 
ii  libmetacity-private0        1:2.30.1-1   library for the Metacity window ma
ii  libpango1.0-0               1.28.0-1     Layout and rendering of internatio
ii  libslab0a                   2.30.0-1     beautification app library file
ii  libunique-1.0-0             1.1.6-1      Library for writing single instanc
ii  libx11-6                    2:1.3.3-3    X11 client-side library
ii  libxcursor1                 1:1.1.10-2   X cursor management library
ii  libxft2                     2.1.14-2     FreeType-based font drawing librar
ii  libxi6                      2:1.3-4      X11 Input extension library
ii  libxklavier16               5.0-2        X Keyboard Extension high-level AP
ii  libxml2                     2.7.7.dfsg-2 GNOME XML library
ii  libxss1                     1:1.2.0-2    X11 Screen Saver extension library

Versions of packages gnome-control-center recommends:
ii  bzip2                         1.0.5-4    high-quality block-sorting file co
ii  evolution-data-server         2.28.3.1-1 evolution database backend server
ii  gnome-session                 2.30.0-1   The GNOME Session Manager - GNOME 
ii  gnome-user-guide              2.30.1-1   GNOME user's guide
ii  policykit-1-gnome             0.96-2     GNOME authentication agent for Pol

Versions of packages gnome-control-center suggests:
ii  gnome-screensaver           2.30.0-1     GNOME screen saver and locker
ii  gstreamer0.10-alsa [gstream 0.10.29-4    GStreamer plugin for ALSA
ii  gstreamer0.10-esd [gstreame 0.10.22-1    GStreamer plugin for ESD
ii  gstreamer0.10-plugins-bad [ 0.10.18-2+b1 GStreamer plugins from the "bad" s
ii  gstreamer0.10-plugins-good  0.10.22-1    GStreamer plugins from the "good" 
ii  gstreamer0.10-pulseaudio [g 0.10.22-1    GStreamer plugin for PulseAudio
ii  gstreamer0.10-sdl [gstreame 0.10.18-2+b1 GStreamer plugin for SDL output
ii  libcanberra-gtk-module      0.24-1       translates Gtk+ widgets signals to
ii  x11-xserver-utils           7.5+1+b1     X server utilities

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