Ubuntu does not warn of degraded software raid

[Laryllan]

I'm using a software raid5 with three disks as /home.

Before migrating to a software raid I had faulty hard disks and was warned by a popup after login.
Now, using the raid, there is no warning of any degraded status.

My expectation is that the system tells me that the raid is degraded.
Either by a notification after login or any other means that doesn't involve sending a mail.

Actually I don't know if the gnome-disk-utility is the correct package.
I don't know either if failure warings of single HDDs work in Ubuntu at all any more.
My expertise is from past versions of Ubuntu.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-disk-utility 3.0.2-2ubuntu7
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
Uname: Linux 3.2.0-25-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
Date: Sun Jun 24 11:39:35 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
SourcePackage: gnome-disk-utility
UpgradeStatus: Upgraded to precise on 2012-05-12 (43 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Roger Lawhorn (rll-m)]

This is happening to me with GDU 3.18.3.1 in linux mint 18.
A degraded raid array no longer shows up as degraded and the sync process is no longer visible.

System: Host: xxxxxxx Kernel: 4.4.0-24-generic x86_64 (64 bit gcc: 5.3.1)
           Desktop: Cinnamon 3.0.6 (Gtk 3.18.9) Distro: Linux Mint 18 Sarah