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 tubbadu@lemmy.kde.social to c/kde@lemmy.kde.social
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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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[–] unknowing8343@discuss.tchncs.de 4 points 1 year ago (1 children)

What computer model is that? Might be a special feature of your firmware.

Maybe you could check under the BIOS/UEFI settings.

[–] tubbadu@lemmy.kde.social 1 points 1 year ago

thanks for the answer!

What computer model is that? Might be a special feature of your firmware.

it's a Dell Vostro 15 3000, I never encountered driver issues with this one so far... do you this this may be the cause?

Maybe you could check under the BIOS/UEFI settings.

I already tried but found nothing useful. Also, I don't recall this type of issue with Xorg, I should check