Once upon a time, I've installed Pantheon desktop on Ubuntu 14.04.

And then I decided to use vanilla desktop, Unity.

So I've removed all things related with Pantheon. I can't remember the exact command, but it seems like:

sudo apt-get remove pantheon*

When I open some apps which run with GUI from terminal, an error, a warning or a message is shown.

$ gedit
Gtk-Message: Failed to load module "pantheon-filechooser-module"
$ wireshark
Gtk-Message: Failed to load module "pantheon-filechooser-module"
$ nautilus
Gtk-Message: Failed to load module "pantheon-filechooser-module"

It seems it does not affect to the actual behavior of the system. But it is really annoying to me.

Is there anyone who can give me a tiny hint to solve this problem?

  • Install pantheon and the error will go away.
    – Babbzzz
    Oct 17, 2015 at 11:35
  • 3
    You will always see this message with non-gtk3 apps. It's harmless and you can ignore it. |Elementary OS Freya
    – daGo
    Feb 17, 2016 at 13:26

1 Answer 1


I had the same problem! If you run the following:

env | grep -i gtk

And see the module in your path like mine:


Then it means it's being set somewhere to use the pantheon which needs to be removed. I did a quick grep and found the following:

/etc/profile.d/pantheon-filechooser-module.sh:export GTK_MODULES=pantheon-filechooser-module

So did:

sudo rm /etc/profile.d/pantheon-filechooser-module.sh

Finally - I saved my GTK_MODULES variable without the filechooser in my current session so not to have to restart: (obviously yours will be different to mine)


Job Done.

  • In elementaryOS I had to type it like this: set GTK_MODULES gail:atk-bridge
    – phrogg
    Apr 27, 2019 at 18:08
  • Where ATK-Bridge is just another module like overlay scrollbar, in the answer.
    – phrogg
    Mar 12, 2020 at 19:03

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