Public bug reported:
**1) Ubuntu Version**
Kubuntu 25.10 (development/testing release)
**2) What I expected to happen**
The Sensors page in KDE Info Center should automatically load hardware sensor
information such as CPU temperature, fan speeds, and voltages.
If the required backend tool (`sensors` from lm-sensors) is missing,
KInfoCenter should either:
- install it automatically, or
- show a helpful message explaining what package to install.
**3) What happened instead**
The Sensors page fails to load and shows the error:
"Could not load page content.
The sensors tool is required to display this page, but could not be found."
No guidance is provided, and the module is unusable.
**4) Cause**
The Sensors module in KInfoCenter depends on the `sensors` binary from the
`lm-sensors` package.
However, the Ubuntu/Kubuntu packaging for `kinfocenter` does not install or
recommend this dependency.
After manually installing:
sudo apt install lm-sensors
sudo sensors-detect
the Sensors page loads and works correctly.
This confirms the issue is caused by missing dependency handling in the
package.
**5) Steps to reproduce**
1. Install a clean Kubuntu 25.10 system.
2. Open Info Center.
3. Go to Devices → Sensors.
4. Observe the error shown instead of sensor data.
**6) Why this is a bug**
The KInfoCenter Sensors module is non-functional out of the box on Kubuntu.
Because it requires a tool that is not installed by default, the page always
fails unless the user manually installs lm-sensors.
This is a packaging oversight affecting all Kubuntu 25.10 installs using
KDE Plasma 6.4.x.
**7) Suggested fix**
One of:
- Add `lm-sensors` as a Recommends/Depends for the `kinfocenter` package, OR
- Modify the module to prompt the user to install lm-sensors, OR
- Improve the error message with install instructions.
**8) System Information**
Operating System: Kubuntu 25.10
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.2
Kernel Version: 6.17.0-7-generic (64-bit)
Graphics Platform: Wayland
CPU: 12th Gen Intel® Core™ i7-12700H (20 threads)
RAM: 16 GiB
GPU 1: Intel Iris Xe
GPU 2: NVIDIA GeForce RTX 3070 Laptop GPU
Laptop Model: HP OMEN by HP Laptop 16-b1xxx
**9) Additional info**
A screenshot of the error is attached.
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: kinfocenter 4:6.4.5-0ubuntu2
ProcVersionSignature: Ubuntu 6.17.0-7.7-generic 6.17.2
Uname: Linux 6.17.0-7-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Sun Nov 30 10:43:56 2025
InstallationDate: Installed on 2025-11-29 (1 days ago)
InstallationMedia: Kubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
SourcePackage: kinfocenter
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: kinfocenter (Ubuntu)
Importance: Undecided
Status: New
** Tags: kinfocenter kubuntu lm-sensors sensors
** Attachment added: "Screenshot_20251130_103807.png"
https://bugs.launchpad.net/bugs/2133448/+attachment/5930446/+files/Screenshot_20251130_103807.png
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https://bugs.launchpad.net/bugs/2133448
Title:
KInfoCenter Sensors page fails to load due to missing lm-sensors
dependency
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