I was wrong in my last comment. The issue posted in the blog has nothing to do with this bug, because the font is specified as "Ubuntu Bold 11", so the font family doesn't contain any space.
Anyway, I added some debugging info in the panel (CroppedLabel.cpp), to print out the name of the font being retrieved, and I managed to reproduce the bug (though I'm not sure what steps I followed, it seems rather random). Here's the output: ====================== unity-2d-panel: [DEBUG] Font name: "Ubuntu Bold 11" unity-2d-panel: [DEBUG] Desc 0x7fa3ac00d890 unity-2d-panel: [DEBUG] Font name: "Ubuntu Bold 11" unity-2d-panel: [DEBUG] Desc 0x257a150 unity-2d-panel: [DEBUG] Font name: "Ubuntu Bold 11" unity-2d-panel: [DEBUG] Desc 0x23a4610 unity-2d-panel: [DEBUG] Font name: "Ubuntu Bold 11" unity-2d-panel: [DEBUG] Desc 0x257a120 unity-2d-panel: [DEBUG] Font name: "Ubuntu Bold 11" unity-2d-panel: [DEBUG] Desc 0x7fa3ac0044f0 unity-2d-panel: [WARNING] GLib-GObject: invalid (NULL) pointer instance unity-2d-panel: [CRITICAL] GLib-GObject: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed unity-2d-panel: [CRITICAL] GLib-GObject: g_object_weak_ref: assertion `G_IS_OBJECT (object)' failed unity-2d-panel: [WARNING] GLib-GObject: invalid (NULL) pointer instance unity-2d-panel: [CRITICAL] GLib-GObject: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed unity-2d-panel: [WARNING] GLib-GObject: invalid (NULL) pointer instance unity-2d-panel: [CRITICAL] GLib-GObject: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed unity-2d-panel: [WARNING] GLib-GObject: invalid (NULL) pointer instance unity-2d-panel: [CRITICAL] GLib-GObject: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed unity-2d-panel: [WARNING] GLib-GObject: invalid (NULL) pointer instance unity-2d-panel: [CRITICAL] GLib-GObject: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed unity-2d-panel: [WARNING] GLib-GObject: invalid (NULL) pointer instance unity-2d-panel: [CRITICAL] GLib-GObject: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed unity-2d-panel: [WARNING] Configuration server couldn't be contacted: D-BUS error: Method "LookupExtended" with signature "ssb" on interface "org.gnome.GConf.Database" doesn't exist GConf Error: Configuration server couldn't be contacted: D-BUS error: Method "AddNotify" with signature "s" on interface "org.gnome.GConf.Database" doesn't exist unity-2d-panel: [WARNING] GConf: Directory `/apps/metacity/general/titlebar_font' was not being monitored by GConfClient 0x22fd000 unity-2d-panel: [DEBUG] Font name: "" unity-2d-panel: [DEBUG] Desc 0x7fa3ac00da40 unity-2d-panel: [WARNING] GLib-GObject: invalid (NULL) pointer instance unity-2d-panel: [CRITICAL] GLib-GObject: g_signal_handler_disconnect: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed unity-2d-panel: [WARNING] GLib-GObject: invalid (NULL) pointer instance unity-2d-panel: [CRITICAL] GLib-GObject: g_signal_handler_disconnect: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed unity-2d-panel: [WARNING] GLib-GObject: invalid (NULL) pointer instance unity-2d-panel: [CRITICAL] GLib-GObject: g_signal_handler_disconnect: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed unity-2d-panel: [WARNING] GLib-GObject: invalid (NULL) pointer instance unity-2d-panel: [CRITICAL] GLib-GObject: g_signal_handler_disconnect: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed unity-2d-panel: [WARNING] GLib-GObject: invalid (NULL) pointer instance unity-2d-panel: [CRITICAL] GLib-GObject: g_signal_handler_disconnect: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed unity-2d-panel: [WARNING] GLib-GObject: invalid (NULL) pointer instance unity-2d-panel: [CRITICAL] GLib-GObject: g_signal_handler_disconnect: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed unity-2d-panel: [CRITICAL] GLib-GObject: g_object_weak_unref: assertion `G_IS_OBJECT (object)' failed unity-2d-panel: [WARNING] Configuration server couldn't be contacted: D-BUS error: Method "LookupExtended" with signature "ssb" on interface "org.gnome.GConf.Database" doesn't exist GConf Error: Configuration server couldn't be contacted: D-BUS error: Method "AddNotify" with signature "s" on interface "org.gnome.GConf.Database" doesn't exist unity-2d-panel: [WARNING] GConf: Directory `/apps/metacity/general/titlebar_font' was not being monitored by GConfClient 0x22fd000 unity-2d-panel: [DEBUG] Font name: "" unity-2d-panel: [DEBUG] Desc 0x7fa3ac00a070 unity-2d-panel: [WARNING] Configuration server couldn't be contacted: D-BUS error: Method "LookupExtended" with signature "ssb" on interface "org.gnome.GConf.Database" doesn't exist GConf Error: Configuration server couldn't be contacted: D-BUS error: Method "AddNotify" with signature "s" on interface "org.gnome.GConf.Database" doesn't exist unity-2d-panel: [WARNING] GConf: Directory `/apps/metacity/general/titlebar_font' was not being monitored by GConfClient 0x22fd000 unity-2d-panel: [DEBUG] Font name: "" unity-2d-panel: [DEBUG] Desc 0x7fa3ac012700 [...] ====================== At the top, when "Font name" prints "Ubuntu Bold 11", the font is displayed nicely. Then it looks like the connection to gconf breaks, and we are not able to retrieve the font name anymore. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/820274 Title: [panel] Window title switch to arial font after using Synaptic To manage notifications about this bug go to: https://bugs.launchpad.net/unity-2d/+bug/820274/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
