How to close notifications with the keyboard?

my problem is that when I insert a drive (HDD partition, DVD etc.) a notification appears, which has a unlimited duration.

Clicking somewhere (except the options) will close this notification, but it is bothersome that I always have to use the mouse.

Is there a way to close these notifications with the keyboard or to set a duration?

Solution 1:

I don't have an answer to closing it with the keyboard but if you edit the /usr/share/gnome-shell/js/ui/autorunManager.js and change the line

this.setUrgency(MessageTray.Urgency.CRITICAL);

to

this.setUrgency(MessageTray.Urgency.NORMAL);

It will only pop up for a few seconds and then disappear. You will still have the Icon in the panel, it will just not bug you down below.