New software has been introduced on Ubuntu 23.10: a new Flutter-based App Center and a Firmware Updater tool, as can be read in Ubuntu Desktop 23.10: Mantic Minotaur deep dive.

However, after upgrading from Ubuntu 23.04 to 23.10, I can't find either of these tools.

How can I get them?

  • 6
    To those who downvoted: Please reconsider, and perhaps remove downvotes - this is a legitimate question. Thanks. Oct 13, 2023 at 12:28

1 Answer 1


I see this as well. Here's how to fix this.

snap-store --quit
sudo snap refresh snap-store --channel=latest/stable/ubuntu-23.10

If despite the snap-store --quit this tells you that it cannot do so, because it has running apps, something along the lines of

error: cannot refresh "snap-store": snap "snap-store" has running apps (ubuntu-software), pids:

kill -9 3071 or whatever PID is being shown, then once more

sudo snap refresh snap-store --channel=latest/stable/ubuntu-23.10

That brought the App Center in for me.

On to firmware-updater. On my 23.04->23.10 it failed during do-release-upgrade.

This was easily remedied by just running that install once more once 23.10 was installed and had rebooted:

sudo snap install firmware-updater

Lastly, if you're keen, you can snap list --all and then sudo snap remove SNAP --revision=REVISION for each disabled snap.

  • 1
    Thank you - this worked perfectly. I wonder how many other things are different between new-as-intended intended, and upgraded systems. This is an issue that I hope future versions of the upgrade process will handle better.
    – user105939
    Oct 13, 2023 at 14:00
  • System Monitor is another application that is not upgraded. It is still the old one.
    – Kuppuswamy
    Oct 15, 2023 at 23:26
  • From 23.10 fresh installation I got App Center icon showing only empty white page. After trying to update and refresh snap I received icon of old Ubuntu Software showing available new packages. I placed this old icon into my dock and removed App Center icon from the dock to Applications. Now I wait for update re App Center.
    – Kapel
    Oct 16, 2023 at 8:17
  • I would recommend snap-store --quit instead of kill -9. Let it exit cleanly, also no need to look up PID numbers. Oct 16, 2023 at 14:52
  • Isn't plasma-systemmonitor for Kubuntu?
    – wolfmanFP
    Oct 27, 2023 at 15:21

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