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I want to know why the switch with ON/OFF has disappeared. And there appeared the message "Attempt to postMessage on disconnected port". I remember it can be used normally before I installed the vpn lantern. How can I resolve this problem?

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Joost
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Shay
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1 Answers1

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The reason is because Mozilla has dropped the NPAPI support from Firefox. This affects many plugins like Siverlight, Acrobat, and Java as well as the GNOME integration plugin.

To get the GNOME website to work, you need to install chrome-gnome-shell a native host messaging application. To do this, open a new Terminal and type the following commands.

For Ubuntu

sudo add-apt-repository ppa:ne0sight/chrome-gnome-shell
sudo apt-get update && sudo apt-get install chrome-gnome-shell

For Fedora

dnf copr enable region51/chrome-gnome-shell
dnf install chrome-gnome-shell

For Gentoo

emerge -av gnome-extra/chrome-gnome-shell

Also, if you are using Firefox, make sure you have GNOME Shell Integration Firefox plugin installed.

Milin Kodnongbua
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  • So great!This is the correct way to solve the problem.I solved it when I installed chrome-gnome-shell. – Shay Apr 14 '17 at 06:06