Bug 503047 - The brightness cannot be adjusted on Kubuntu 25.04
Summary: The brightness cannot be adjusted on Kubuntu 25.04
Status: RESOLVED WORKSFORME
Alias: None
Product: plasmashell
Classification: Plasma
Component: Power management & brightness (other bugs)
Version First Reported In: 6.3.4
Platform: Kubuntu Linux
: NOR normal
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-04-20 09:17 UTC by Argo40
Modified: 2025-06-13 03:48 UTC (History)
4 users (show)

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Description Argo40 2025-04-20 09:17:42 UTC 
SUMMARY
The brightness of Kubuntu cannot be adjusted.
Even if the NVIDIA driver is installed, it doesn't work. 
But this is avaiable in VMware Workstation.

STEPS TO REPRODUCE
1. Click the light bulb icon in the lower right corner and slide the brightness bar. 
2. Then nothing happened.
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 6.3.4
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.12.0
Qt Version: 6.8.3

ADDITIONAL INFORMATION
Comment 1 Nate Graham 2025-04-22 15:55:15 UTC 
So this system is running in a VM?
Comment 2 Bug Janitor Service 2025-05-07 03:47:03 UTC 
🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!
Comment 3 flotwig 2025-05-14 22:26:45 UTC 
I'm having a likely related issue now after upgrading from Kubuntu 24.10 to 25.04 on a Lenovo X1 Extreme gen1 laptop. Laptop brightness keys used to work before, now they do nothing.

KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.12.0
Qt Version: 6.8.3
Comment 4 Bug Janitor Service 2025-05-29 03:59:38 UTC 
🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!
Comment 5 Bug Janitor Service 2025-06-13 03:48:22 UTC 
🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.