Dark mode | Prusa Knowledge Base

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Gaetan Pennavayre

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This worked like a charm on Debian 13 using flatpak package:

flatpak override --env=PRUSA_SLICER_DARK_THEME=true com.prusa3d.PrusaSlicer

(as root)

Looper

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^^^ This worked on LinuxMint. Thank you.
sudo flatpak override --env=PRUSA_SLICER_DARK_THEME=true com.prusa3d.PrusaSlicer

David Hahn

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For those hitting this issue on Arch, I'm not sure why they push you to the flatpak but I uninstalled that and installed the version available in the pacman respositories and dark mode is now working with the settings.ini fix from above

Adroit Jones

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[Using Arch Linux but same result with Debian and Tuxedo OS as well] In Prusaslicer 2.9.0-RC1 I no longer have an option in preferences to enable or disable dark mode. Dark mode always worked on previous versions but even though all my system settings are and have always been (even by default) on dark mode, the fact I'm stuck with glaring white on my screen to use prusaslicer is awful. Is this an oversight removing the dark mode button or how is this supposed to be usable in dark mode if my settings are already in dark mode.

Jav.BR

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Same here, on Arch. I uninstalled from pacman and installed 2.9 from flathub as they suggested - no more dark mode

B Major

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Also, the below "settings.ini" file fix doesn't work for me. The upgrade to the flatpak has broken dark mode on Linux for me. I'm on Ubuntu 20.04.

O

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I also installed from flatpak. What worked for me was to change the env variable for prusa slicer to enable dark mode. I used the "flatseal" app to do it, but there are probably other ways. I changed the following from false to true and restarted slicer
PRUSA_SLICER_DARK_THEME=true

gman

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Thank you, this worked. !!

erffrfez

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Too easy once done, but I struggle to see WHY we should need to do this!

DavidThePurple

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Still works on Linux Mint. 22.2 w/ Cinnamon 6.4.8

MagnusVesper

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To enable dark mode on linux, run this line in a terminal:
mkdir -p ~/.config/gtk-3.0 && echo "[Settings]\ngtk-application-prefer-dark-theme = true" >> ~/.config/gtk-3.0/settings.ini

MagnusVesper

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If you want a step-by-step: If the folder ~/.config/gtk-3.0 does not exist, make it. Create/edit ~/.config/gtk-3.0/settings.ini Add these 2 lines to it: [Settings]gtk-application-prefer-dark-theme = true Note: if there is already a "[Settings]" line, you can just put the "gtk-application..." line after it. But having 2 "[Settings]" lines doesn't cause issues. Having 2 of the "gtk-application..." lines doesn't seem to cause issues either. So the command in my first comment should always work.(Edit: not sure why line breaks aren't showing here. There should be 1 line containing only "[Settings]" and a second containing "gtk-application-prefer-dark-theme = true" without the quotes on either.)

PunyPaladin

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Thanks for this.
I had everything already, the directory, the settings.ini file, but the file said gtk-application-prefer-dark-theme=0

I changed it to:

gtk-application-prefer-dark-theme=1

and it worked.

MagnusVesper

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"If you have dark mode enabled in your system settings" - there is no "system settings" app nor is there a "dark mode" setting in Linux.
What specifically enables dark mode in Linux?

MagnusVesper

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Some Linux distros come with system settings apps, and some of those have "dark mode" settings. But those are all separate apps using separate methods to enable what they decided to call "dark mode".
Just stating the way it checks would save a ton of people headaches.