https://bugs.kde.org/show_bug.cgi?id=520782
Bug ID: 520782
Summary: [Wishlist] Tie Color Scheme / Global Theme to Battery
State or Power Profile
Classification: Plasma
Product: plasmashell
Version First master
Reported In:
Platform: EndeavourOS
OS: Linux
Status: REPORTED
Severity: wishlist
Priority: NOR
Component: Power management & brightness
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: 1.0
SUMMARY / DESCRIPTION
Currently, Plasma natively supports dynamic theme switching based on time
(Sunrise/Sunset via Night Color) which is excellent. However, there is no
native way to dynamically switch between Light and Dark themes based on the
system's power state (AC vs. Battery) or current Power Profile (Performance
vs. Power Save).
With the removal of the old GUI option to "run scripts" on power state
changes in Plasma 6, users who want their desktop to automatically switch to a
Dark Theme when unplugging their laptops are forced to write and maintain
custom udev rules.
STEPS TO REPRODUCE
1. Unplug a laptop to switch from AC power to Battery power.
2. The user wants the Global Theme or Color Scheme to automatically switch to
a Dark Theme to save battery (especially critical on OLED screens) and to
provide visual feedback that the system is on battery.
OBSERVED RESULT
The theme remains static. There is no built-in GUI option in System Settings
(under "Colors & Themes" or "Energy Saving") to link the Color Scheme to
the AC/Battery state.
EXPECTED RESULT
Please add a toggle in the "Colors & Themes" System Settings (or in the
Energy Saving module) to tie the Light/Dark Color Scheme specifically to the
AC/Battery state. Alternatively, allow linking Color Schemes directly to the
power-profiles-daemon states (e.g., Performance = Light Theme, Power
Save
= Dark Theme).
SOFTWARE/OS VERSIONS
Operating System: EndeavourOS
KDE Plasma Version: 6.x
(I am submitting this as a feature request/wishlist item for future Plasma
releases).
ADDITIONAL INFORMATION
Use Cases:
1. OLED Battery Savings: On laptops with OLED screens, dark themes
significantly reduce power consumption. Automatically switching to a Dark Theme
when
moving to Battery power is a tangible battery-saving measure.
2. Visual Feedback: A theme change provides immediate, persistent visual
feedback to the user that the laptop has been unplugged and is operating in a
power-saving mode.
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