Default to system appearance doesn't work on Ubuntu 20.04

I have a dark mode in Ubuntu 20.04, but when choosing the “Default to system appearance” option, GitHub stays in light mode.


I can confirm the same on Arch. Expected “Default to system”, found “light”.

State your DM. It’s not the distro, it’s the display manager.

Working fine on Arch with Cinnamon :+1:

Thanks for reporting this issue! I’ll share this with the team and add it to our backlog to investigate.

I have the opposite issue on macOS Big Sur. My system default is “auto” and currently my OS is using light mode, but Github is using dark mode.

I’m using Firefox 84.0b8.

1 Like

I have Arch Linux with GNOME Shell 3.38.2 and using a dark theme, Adapta (Adapta Nokto Eta).
When using the “Default to system” toggle, GitHub’s using the light mode instead of the dark mode.

Manually setting the dark mode is indeed working, but not ideal.

1 Like

On macOS Catalina 10.15.7 (using Firefox version 83.0) with system default theme “auto”, Github “Default to system” option doesn’t work, it’s using dark mode.

I’m running KDE on Ubuntu 20.04 and it works for me.

Same on macos big sur version 11.0.1 on Google Chrome version 86.0.4240.198 (Official Build) (x86_64)

Using Brave on macOS 11.0.1 in ‘Default to system’ results in dark mode when system is in light mode.

Just confirming that it’s still same on Ubuntu.

KDE Plasma, on X, with SDDM.

“Default to system” works for me now! (macOS Catalina 10.15.7, Firefox 84.0.2).

I’m still encountering this issue on Ubuntu 20.04.2 LTS. But it happens for just a few minutes. For some reason, after exiting out of the GitHub page then opening a new one, it randomly worked.

I am also having the same issue.
OS: Zorin OS Core 15.3
Browser: Google Chrome 89.0.4389.72 (Official Build) beta (64-bit)
Display manager: GDM

Work and Rocks !