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I am using Xubuntu 14.04 (Ubuntu + xubuntu-desktop), The following Message shown many times (such as executing mousepad , zenity etc).

$ mousepad
Gtk-Message: Failed to load module "overlay-scrollbar"
pandya@pandya-desktop:~$ zenity --info
Gtk-Message: Failed to load module "overlay-scrollbar"

Why I am getting this message? How to solve?

Pandya
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2 Answers2

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After installing xubuntu-desktop, I've removed some packages that are pre-installed in Ubuntu 14.04 (and no longer required) by this command.

These packages removed successfully and all working fine but some residual config are still exist and hence I removed unity-scrollbar from synaptic residual config:

enter image description here

Which removed files like: /etc/X11/Xsession.d/81overlay-scrollbar.

After logout and login I again tried to launch by command as below:

$ mousepad
$ zenity --info

Now Gtk-Message: Failed to load module "overlay-scrollbar" is gone, and problem solved.

Pandya
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    For clearing all residual config, Visit : http://askubuntu.com/a/540173/256099 – Pandya Dec 03 '14 at 09:41
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    I just manually removed /etc/X11/Xsession.d/81overlay-scrollbar and relogged. The warning went away. Thanks. – Halsafar May 05 '17 at 16:57
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    This is an another correct way to clean-up the residual configuration: sudo dpkg --purge overlay-scrollbar overlay-scrollbar-gtk2:amd64 overlay-scrollbar-gtk3:amd64 – Alexander Pozdneev Aug 24 '17 at 07:38
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    BTW, technically, the message is related to the GTK_MODULES=overlay-scrollbar environment variable that is set in the /etc/X11/Xsession.d/81overlay-scrollbar file. – Alexander Pozdneev Aug 24 '17 at 07:44
  • But how did you associate the error message with the residual package? That is a mystery to me! – Bruno Ranschaert Dec 10 '17 at 16:15
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$ sudo apt install --reinstall overlay-scrollbar-gtk2

Fixed this for me.

It reinstalls

/usr/lib/x86_64-linux-gnu/gtk-2.0/modules/liboverlay-scrollbar.so

which was missing before.

Lollypop
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