Bug 490472 - Brightness set to random percentages after suspend or reboot/shutdown
Summary: Brightness set to random percentages after suspend or reboot/shutdown
Status: NEEDSINFO WAITINGFORINFO
Alias: None
Product: plasmashell
Classification: Plasma
Component: Power management & brightness (show other bugs)
Version: 6.2.4
Platform: Other Other
: NOR normal
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-07-18 20:36 UTC by ciaoplsciao
Modified: 2025-03-21 03:46 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments
journalctl log of the day i made the bug report (719.50 KB, text/plain)
2024-07-18 20:36 UTC, ciaoplsciao
Details

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Description ciaoplsciao 2024-07-18 20:36:44 UTC
Created attachment 171769 [details]
journalctl log of the day i made the bug report

SUMMARY
Brightness is set to random percentages after suspend or reboot/shutdown, sometimes im able to set the brightness up to 100 in KDE other times the brightness slider is broken and i have to change it manually in the monitor. Attached is the result of the following command `journalctl -S 2024-07-18`.

STEPS TO REPRODUCE
1. Start up computer
2. Log in
3. Set brightness to 100
4.  Wait for system to go in standby
5. Wake computer up

OBSERVED RESULT

Brightness is set to a lower value than before

EXPECTED RESULT

Brightness is still 100

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20240711
KDE Plasma Version: 6.1.2
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.2
Kernel Version: 6.9.7-1-default (64-bit)

ADDITIONAL INFORMATION
Form factor : Desktop
Graphics Platform: X11
Processors: 16 × AMD Ryzen 7 3700X 8-Core Processor
Memory: 15.5 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3060 Ti/PCIe/SSE2
Manufacturer: Micro-Star International Co., Ltd.
Product Name: MS-7C56
System Version: 1.0

Monitor: LG Electronics 24GL600F connected to the computer using DisplayPort
Comment 1 ciaoplsciao 2024-07-18 20:41:09 UTC
today it was one of those sessions in which the brightness slider wasnt working.
Comment 2 TraceyC 2025-03-06 18:42:31 UTC
To narrow down the problem, we need some more information:
- How is the monitor connected?
- Has changing screen brightness via Plasma ever worked?
- Can you paste the output of `kscreen-doctor -o`?

Thanks.

This could be a duplicate of bug 492481.
Comment 3 Bug Janitor Service 2025-03-21 03:46:56 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.

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