Modern desktop environments and applications such as Dino expect your notifications to be saved in a drawer where they can be reviewed.

In MATE, these notifications are transient and just fade away before you can review them. Let’s fix that.

First, install the needed package.

$ sudo apt install ayatana-indicator-notifications

Then, go to Trisquel > System > Control Center and under Look and Feel click on Indicators.

Click Enable this indicator on login.

Log out, and log back in. You should now see a mailbox icon in your panel where your notifications are stored.