(Do:2621): Wnck-CRITICAL **: wnck_set_client_type got called multiple times. (gnome-shell:2584): Clutter-WARNING **: Unable to use the ShaderEffect: the graphics hardware or the current GL driver does not implement support for the GLSL shading language. (gnome-shell:2584): Clutter-WARNING **: Unable to use the ClutterBrightnessContrastEffect: the graphics hardware or the current GL driver does not implement support for the GLSL shading language. The effect will be disabled. (gnome-shell:2584): Clutter-WARNING **: Unable to use the ShaderEffect: the graphics hardware or the current GL driver does not implement support for the GLSL shading language. (gnome-shell:2584): Clutter-WARNING **: Unable to use the ClutterBrightnessContrastEffect: the graphics hardware or the current GL driver does not implement support for the GLSL shading language. The effect will be disabled. (ephy-profile-migrator:2948): GLib-GIO-CRITICAL **: g_file_enumerator_next_file: assertion `G_IS_FILE_ENUMERATOR (enumerator)' failed (ephy-profile-migrator:2948): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed