Some applications are displaying really ugly widgets and menus. I think it's a GTK issue and perhaps more particularly, only applies to GTK2 apps but I'm not sure. The numerous questions on here that deal with GTK2 v GTK3 themes do not answer my problem. Here is my situation:

I've been searching for a solution to this problem for some time. The logical explanation is that all the GTK3 apps are working and anything that is still using GTK2 is not. If that's the case though, why did the same installation (Ubuntu Gnome 12.10) and the same theme (Adwaita) previously work with all those GTK2 apps?

Desperate for help!

  • Have you any messages on the console if you run gimp or firefox from a terminal, about the theme?
    – dobey
    Dec 10, 2012 at 14:29
  • Yes, it says: (firefox:2773): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
    – Erland
    Dec 11, 2012 at 10:12

1 Answer 1


Thanks to dobey, I can answer my own question (and apologies for missing something so obvious).

The short answer is: you just need to install the pixbuf theme engine: gtk2-engines-pixbuf

NB. This is basically the same as outlined in this question - I never found that question because it identifies the problem as verbose command line errors instead of ugly widgets and menus.

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