When I start Ubuntu (10.04), the desktop starts and has windows without their window chrome (e.g. they don't have close, minimize, or maximize buttons). When I click on the "show desktop" icon, the following message pops up:
Your window manager does not support the show desktop button, or you are not running a window manager.
I can fix this by going to appearance and toggling the visual effects levels to anything different than what they were on.
Based on the behavior and the message, I expect that the window manager is simply not starting correctly when I boot up. What is the best way to make it do so?
Potentially applicable log (from log viewer):
Apr 20 17:46:09 WinterMute acpid: 1 client rule loaded
Apr 20 17:46:09 WinterMute acpid: client connected from 14964[0:0]
Apr 20 17:46:09 WinterMute acpid: 1 client rule loaded
Apr 20 17:46:11 WinterMute gdm-simple-greeter[15041]: Gtk-WARNING: /build/buildd/gtk+2.0-2.20.1/gtk/gtkwidget.c:5636: widget not within a GtkWindow
Apr 20 17:46:18 WinterMute gdm-session-worker[15043]: GLib-GObject-CRITICAL: g_value_get_boolean: assertion `G_VALUE_HOLDS_BOOLEAN (value)' failed
Apr 20 17:46:19 WinterMute gnome-session[15073]: WARNING: Could not parse desktop file /home/tchalvak/.config/autostart/xfconf-migration-4.6.desktop: Key file does not have key 'Name'
Apr 20 17:46:19 WinterMute gnome-session[15073]: WARNING: could not read /home/tchalvak/.config/autostart/xfconf-migration-4.6.desktop
Apr 20 17:46:19 WinterMute gnome-session[15073]: WARNING: Could not launch application '10b602e69f41694b93125011878472406000000044180035.desktop': Unable to start application: Failed to execute child process "/usr/bin/compiz.real" (No such file or directory)
Apr 20 17:46:19 WinterMute gnome-session[15073]: WARNING: Could not launch application 'ubuntuone-client-applet.desktop': Unable to start application: Failed to execute child process "ubuntuone-client-applet" (No such file or directory)
Apr 20 17:46:19 WinterMute gnome-session[15073]: WARNING: Could not launch application '10996e0d149c5579e7125021326532307300000045290042.desktop': Unable to start application: Failed to execute child process "hamster-applet" (No such file or directory)
Apr 20 17:46:20 WinterMute gnome-session[15073]: WARNING: Could not launch application '10996e0d149c5579e712502132692274200000045290043.desktop': Unable to start application: Failed to execute child process "fast-user-switch-applet" (No such file or directory)
Apr 20 17:47:23 WinterMute AptDaemon: INFO: Initializing daemon