this post was submitted on 28 Jun 2023
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Why does the brightness go down when unplugging the charger? (lemmy.kde.social)
submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]
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Hello! KDE plasma wayland session on fedora 37 here. I noticed that the brightness (even if the indicator always shows 100%) is "less bright" with the charger unplugged, and brighter with the charger plugged in.
the strange thing is that this does not happen instantly, when I unplug it it slowly lowers the brightness, almost imperceptibly, and in about 4~5 seconds it stops at a lower brightness. the same happens when I plug it back.
am I the only one with this problem? googling it returned only unrelated issues.

(note, in settings > energy saving the option to change screen brightness on battery power is unchecked)

thanks in advance!

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[–] [email protected] 5 points 1 year ago (1 children)

Did you check the Energy Saving settings? There should be a setting to set the screen brightness dependent on whether the device is plugged in/running on battery.

[–] [email protected] 2 points 1 year ago* (last edited 1 year ago) (1 children)

OP said

(note, in settings > energy saving the option to change screen brightness on battery power is unchecked)

So either that setting is ignored or there's two competing energy saving modules active or there's a but in the setting or something completely else...

[–] [email protected] 1 points 1 year ago

I have not any other energy saving module installed that I'm aware of