[Bug 2143203] Re: Adopting dark mode by default for OLED panel

** Also affects: linux (Ubuntu Resolute)
Importance: Undecided
Status: New

** Also affects: gnome-initial-setup (Ubuntu Resolute)
Importance: Undecided
Status: New

** Changed in: linux (Ubuntu Resolute)
Status: New => In Progress

** Changed in: linux (Ubuntu Resolute)
Assignee: (unassigned) => Timo Aaltonen (tjaalton)

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https://bugs.launchpad.net/bugs/2143203

Title:
Adopting dark mode by default for OLED panel

Status in gnome-initial-setup package in Ubuntu:
New
Status in linux package in Ubuntu:
In Progress
Status in gnome-initial-setup source package in Resolute:
New
Status in linux source package in Resolute:
In Progress

Bug description:
[Impact]

On some systems using the OLED panel, AMD found that the default light
mode results in higher power consumption compared to other operating
systems that default to dark mode. This reduces power efficiency and
may impact battery life on affected devices.

[Fix]

https://lore.kernel.org/dri-
devel/20260106170017.68158-1-superm1@kernel.org/

[Test Case]

1) Ensure the system is using the default light mode theme with OLED panel connected
2) Run standard workload for power measurements (e.g., video playback, web browsing, idle with desktop visible).
3) Record total system power consumption.
4) Switch to dark mode and perform the same workloads
5) Compare power consumption results

[Where problems could occur]

Devices connected to OLED panels with light mode, run a workload to
trigger power loading.

[Other Info]

AMD suggests adopting dark mode in some way when an OLED panel is
present. The patches is available to detect OLED panels
programmatically, which can be used to implement conditional behavior
or user messaging.

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