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I am having a problem similar to that asked (and solved) here: Can't enable GNOME Shell extensions. I have performed both of the "tweaks" explained in that solution (i.e., here and here); but that does not seem to help.

My gnome-shell is version 3.2.1. When I run gnome-tweak-tool from a shell, I get the following output:

CRITICAL: Unknown extension error

CRITICAL: Unknown extension error

CRITICAL: Unknown extension error

CRITICAL: Unknown extension error

CRITICAL: Unknown extension error

CRITICAL: Unknown extension error

CRITICAL: Unknown extension error

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

(gnome-tweak-tool:7823): Gtk-CRITICAL **: gtk_widget_get_preferred_height_for_width: assertion `width >= 0' failed

Has anyone actually solved this besides to the references above? I have made the suggested modifications from those sites.

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  • Does gnome-tweak-tool start ? The error messages you are posting are quite meaningless. 2. Do you have any additional ppa's enabled ? if yes, which ones' ?
    – martin
    Nov 26, 2011 at 9:27
  • Yes, it starts. The messages are displayed while starting... but, from the Shell Extensions panel, only User Themes Extension and Applications Menu Extension are usable. The other 9 extensions have an error (orange) icon displayed and they are disabled. The screen looks just the same as displayed in the attached link: askubuntu.com/questions/76072/…
    – TheGeeko61
    Nov 26, 2011 at 16:49
  • which ppa 's do you have enabled ?
    – martin
    Nov 26, 2011 at 16:53

1 Answer 1

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Solved. I re-visited the "solutions" from the other post and un-did the changes which I had earlier made per that posting... and, although gnome-tweak-tool still reports:

CRITICAL: Error parsing schema org.gnome.shell (/usr/share/glib-2.0/schemas/org.gnome.shell.gschema.xml)

the extensions are enabled.

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