Kubuntu 25.10 does not have a release candidate, installs 6.04

Incus
1

Hi everyone
My dev pc stopped working so I am trying to install Incus on my laptop which is running Kubuntu 25.10, until I can replace my dev pc. However, I keep managing to only install version 6.0/6.04. I have searched the web, tried to upgrade and even tried the daily repo. Nothing works. I even increased the Incus repo priority to 1001 (so it is higher than Ubuntu’s repos. The most common error is that there is no release candidate available for “questing” (even though I changed the repo to noble).
Can anyone please point out what I can do, or should I downgrade Kubuntu?
Thanx in advance

2

Run the following command. It shows the available packages for incus, and also which one of them will get installed, if you actually run sudo apt install incus.

apt policy incus

Here is a real output from Ubuntu 24.04.4 LTS. We verify which versions of Linux we are running. Then, it shows that Ubuntu 24.04.4 LTS does have an incus 6.0.0 package that comes from the universe repository. That package has a security update, therefore if you are going to install incus, you will be getting the updated version. The Candidate: line verifies that apt will installed the updated version by default.

$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 24.04.4 LTS
Release:	24.04
Codename:	noble
$  apt policy incus
incus:
  Installed: (none)
  Candidate: 6.0.0-1ubuntu0.3
  Version table:
     6.0.0-1ubuntu0.3 500
        500 http://archive.ubuntu.com/ubuntu noble-updates/universe amd64 Packages
        500 http://security.ubuntu.com/ubuntu noble-security/universe amd64 Packages
     6.0.0-1 500
        500 http://archive.ubuntu.com/ubuntu noble/universe amd64 Packages

Therefore, if you get something different, run the above command and paste here the output.

3

Hi @simos Simos Xenitellis
Thank you for your response. Since Incus is already installed I get the following results on the above commands:
For "lsb_release -a "
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 25.10
Release: 25.10
Codename: questing
And for “apt policy incus”
incus:
Installed: 6.0.4-2
Candidate: 6.0.4-2
Version table:
*** 6.0.4-2 500
500 Index of /ubuntu questing/universe amd64 Packages
100 /var/lib/dpkg/status

4

The output of apt policy incus shows that you have not installed any additional repositories for Incus. You are getting the stable 6.0.x line of Incus, as provided by the universe repository. If you feel that you should be getting additional versions of Incus, show what instructions you are using to add more repositories.

The Zabbly repository has the instructions here, GitHub - zabbly/incus: Incus package repository · GitHub Note that you can select whether to enable the 6.0 LTS repository (new version every two years), the Stable repository (new version every month), and the Daily repository (new version every day).

The next LTS version will appear in April 2026.

1 Like
5

Thanx again @simos
I followed the instructions as per the Github page for the stable release:
..curl -fsSL https://pkgs.zabbly.com/key.asc | gpg --show-keys --fingerprint
..mkdir -p /etc/apt/keyrings/
..curl -fsSL https://pkgs.zabbly.com/key.asc -o /etc/apt/keyrings/zabbly.asc
..sh -c ‘cat < /etc/apt/sources.list.d/zabbly-incus-stable.sources
Enabled: yes
Types: deb
URIs: Index of /incus/stable/
Suites: $(. /etc/os-release && echo ${VERSION_CODENAME})
Components: main
Architectures: $(dpkg --print-architecture)
Signed-By: /etc/apt/keyrings/zabbly.asc
EOF’
..apt-get update
..sudo apt install incus