Bug#457777: gnome-screensaver: does sometime not display login-dialog, locking out user

[Tobias Frost]

Package: gnome-screensaver
Version: 2.20.0-2
Severity: normal


Not reproducable, but at a frequent level, I get the following
behaviour: 

After the screen is (auto-)locked, i press the shift key to login again.
But sometimes the login screen is not appearing. However, the keystroke
is recognized: The screensaver artworks freezes; but no dialog is 
appearing. 

This is really annoying, as the only solution -- if no network
connection is a hand -- is to "hard-off" the laptop. The serverity is
choosen, as this can lead to data loss (unsafed documents) or even 
corrupted filesystems. (I use a cryted fs, so this is making me
a hard time every time I have to put the system down that hard.)

sshing into the affected system show that the screensaver process is 
running at 100% (which is probably ok). Killing the process
with SIGKILL will eventually make the login dialog appear. 

I have the impression, that the OpenGL screensavers are more likely to
expose the bugs, but this can only be an personal impression.



-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.23-1-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages gnome-screensaver depends on:
ii  dbus                    1.1.2-1          simple interprocess messaging syst
ii  gconf2                  2.20.1-2         GNOME configuration database syste
ii  gnome-icon-theme        2.20.0-1         GNOME Desktop icon theme
ii  libatk1.0-0             1.20.0-1         The ATK accessibility toolkit
ii  libc6                   2.7-5            GNU C Library: Shared libraries
ii  libcairo2               1.4.12-1         The Cairo 2D vector graphics libra
ii  libdbus-1-3             1.1.2-1          simple interprocess messaging syst
ii  libdbus-glib-1-2        0.74-1           simple interprocess messaging syst
ii  libfontconfig1          2.5.0-2          generic font configuration library
ii  libfreetype6            2.3.5-1+b1       FreeType 2 font engine, shared lib
ii  libgconf2-4             2.20.1-2         GNOME configuration database syste
ii  libgl1-mesa-glx [libgl1 7.0.2-3          A free implementation of the OpenG
ii  libglade2-0             1:2.6.2-1        library to load .glade files at ru
ii  libglib2.0-0            2.14.4-2         The GLib library of C routines
ii  libgnome-menu2          2.20.2-1         an implementation of the freedeskt
ii  libgnomekbd1            2.20.0-1         GNOME library to manage keyboard c
ii  libgnomekbdui1          2.20.0-1         User interface library for libgnom
ii  libgnomevfs2-0          1:2.20.1-1       GNOME Virtual File System (runtime
ii  libgtk2.0-0             2.12.3-2         The GTK+ graphical user interface 
ii  libice6                 2:1.0.4-1        X11 Inter-Client Exchange library
ii  libnotify1 [libnotify1- 0.4.4-3          sends desktop notifications to a n
ii  liborbit2               1:2.14.7-0.1     libraries for ORBit2 - a CORBA ORB
ii  libpam0g                0.99.7.1-5       Pluggable Authentication Modules l
ii  libpango1.0-0           1.18.3-1         Layout and rendering of internatio
ii  libpng12-0              1.2.15~beta5-3   PNG library - runtime
ii  libsm6                  2:1.0.3-1+b1     X11 Session Management library
ii  libx11-6                2:1.0.3-7        X11 client-side library
ii  libxcursor1             1:1.1.9-1        X cursor management library
ii  libxext6                1:1.0.3-2        X11 miscellaneous extension librar
ii  libxfixes3              1:4.0.3-2        X11 miscellaneous 'fixes' extensio
ii  libxi6                  2:1.1.3-1        X11 Input extension library
ii  libxinerama1            1:1.0.2-1        X11 Xinerama extension library
ii  libxklavier11           3.3-2            X Keyboard Extension high-level AP
ii  libxml2                 2.6.30.dfsg-3    GNOME XML library
ii  libxrandr2              2:1.2.2-1        X11 RandR extension library
ii  libxrender1             1:0.9.4-1        X Rendering Extension client libra
ii  libxss1                 1:1.1.2-1        X11 Screen Saver extension library
ii  libxxf86misc1           1:1.0.1-2        X11 XFree86 miscellaneous extensio
ii  libxxf86vm1             1:1.0.1-2        X11 XFree86 video mode extension l
ii  zlib1g                  1:1.2.3.3.dfsg-8 compression library - runtime

Versions of packages gnome-screensaver recommends:
ii  gnome-power-manager           2.20.2-1   frontend for gnome-powermanager
ii  libpam-gnome-keyring          2.20.2-1   GNOME keyring services PAM module
ii  rss-glx                       0.8.1-8    Really Slick Screensavers GLX Port

-- no debconf information