https://bugs.kde.org/show_bug.cgi?id=445529
Bug ID: 445529
Summary: Brightness too low when using keyboard keys to
decrease brightness
Product: plasmashell
Version: 5.23.3
Platform: Neon Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: k...@davidedmundson.co.uk
Reporter: glifwen...@gmail.com
CC: plasma-b...@kde.org
Target Milestone: 1.0
Created attachment 143576
--> https://bugs.kde.org/attachment.cgi?id=143576&action=edit
brightness
SUMMARY
Brightness too low when using keyboard keys to decrease brightness to 0
percentage, the display appears as if is switched off. But when I use
flashlight on display I can see display contents with very low brightness.
If I decrease the brightness to 0 percentage using slider in system tray then I
can see the contents of display which is also very low brightness, but visible
without flashlight.
When I checked the file "/sys/class/backlight/intel_backlight/brightness" while
decreasing the brightness to 0 percentage, it's value is 1 when using system
tray slider & it's value is 0 when using keyboard keys. Please see the attached
video.
The problem is clear when using Dim screen after 5 minutes & switch off after
10 minutes, after 5 minutes the screen does not appear as dimmed but it appears
as if it is switched off, but visible when using external lightning like
flashlight on the screen.
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
symbols.
See
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***
STEPS TO REPRODUCE
1.
2.
3.
OBSERVED RESULT
EXPECTED RESULT
SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.23
KDE Plasma Version: 5.23.3
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.3
Kernel Version: 5.11.0-40-generic (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i3-5010U CPU @ 2.10GHz
Memory: 3.8 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 5500
ADDITIONAL INFORMATION
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