I'm having a similar issue after upgrading to Xubuntu 9.10. My monitor is a Dell that permits multiple inputs. In this particular case the machine is off one of the DVI inputs. I had to switch from one input to another and when switching back I had no screen.
I've attached my Xorg.O.log file. Please let me know if you need anything else. This is the first time this has happened. >From the .xsession-errors file created: /etc/gdm/Xsession: Beginning session setup... Setting IM through im-switch for locale=en_US. Start IM through /etc/X11/xinit/xinput.d/all_ALL linked to /etc/X11/xinit/xinput.d/default. /usr/bin/startxfce4: X server already running on display :0 ** (gnome-screensaver:1416): WARNING **: Failed to get session presence proxy: Could not get owner of name 'org.gnome.SessionManager': no such name (xfce4-panel:1440): xfce4-panel-WARNING **: xfce4-panel is not running xfdesktop[1439]: starting up (xfce4-mixer-plugin:1458): libxfce4mixer-CRITICAL **: xfce_mixer_get_track: assertion `GST_IS_MIXER (card)' failed (xfce4-mixer-plugin:1458): xfce4-mixer-plugin-CRITICAL **: xfce_mixer_plugin_set_card: assertion `GST_IS_MIXER (card)' failed (xfce4-mixer-plugin:1458): xfce4-mixer-plugin-CRITICAL **: xfce_mixer_plugin_set_track: assertion `GST_IS_MIXER_TRACK (track)' failed *** ERROR *** TI:12:08:36 TH:0x8e58168 FI:gpm-main.c FN:main,250 - Power Manager is already running in this session. Traceback: gnome-power-manager [0x80649bb] gnome-power-manager [0x80574e2] /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe6) [0x1cab56] gnome-power-manager [0x804e971] (polkit-gnome-authentication-agent-1:1483): GLib-GObject-WARNING **: cannot register existing type `_PolkitError' (polkit-gnome-authentication-agent-1:1483): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed ** (update-notifier:1495): DEBUG: error during dbus call: The name org.debian.apt was not provided by any .service files /usr/lib/python2.6/dist-packages/LanguageSelector/gtk/SimpleGtkbuilderApp.py:40: RuntimeWarning: missing handler 'on_combobox_locale_chooser_changed' self.builder.connect_signals(self) /usr/lib/python2.6/dist-packages/LanguageSelector/gtk/SimpleGtkbuilderApp.py:40: RuntimeWarning: missing handler 'on_button_apply_system_wide_clicked' self.builder.connect_signals(self) /usr/lib/python2.6/dist-packages/LanguageSelector/gtk/GtkLanguageSelector.py:871: GtkWarning: gtk_cell_view_set_cell_data: assertion `cell_view->priv->dis played_row != NULL' failed cell = combo.get_child().get_cell_renderers()[0] /usr/lib/python2.6/dist-packages/LanguageSelector/gtk/GtkLanguageSelector.py:838: GtkWarning: gtk_cell_view_set_cell_data: assertion `cell_view->priv->dis played_row != NULL' failed cell = combo.get_child().get_cell_renderers()[0] (xfce4-terminal:3428): Terminal-WARNING **: Unable to load terminal preferences. (polkit-gnome-authentication-agent-1:1483): polkit-gnome-1-WARNING **: Error enumerating temporary authorizations: Remote Exception invoking org.freedeskt op.PolicyKit1.Authority.EnumerateTemporaryAuthorizations() on /org/freedesktop/PolicyKit1/Authority at name org.freedesktop.PolicyKit1: org.freedesktop.Po licyKit1.Error.Failed: Cannot determine session the caller is in xfce4-panel: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. xfsettingsd: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. xfwm4: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. xfce4-session: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. xfce4-settings-helper: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. gnome-screensaver: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. gnome-power-manager: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. xfce4-terminal: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. polkit-gnome-authentication-agent-1: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. nm-applet: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. xfce4-mixer-plugin: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. thunar-tpa: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. firefox: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. xfce4-places-plugin: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. Thunar: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. gnome-volume-control-applet: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. update-notifier: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. xfdesktop: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. xfce4-menu-plugin: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. ** Attachment added: "Xorg.0.log" http://launchpadlibrarian.net/35500985/Xorg.0.log -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp