I'm using Ubuntu and trying to get the preferred theme of the user, by using matchMedia but it always returns false for this query.
matchMedia
false
window.matchMedia('(prefers-color-scheme: dark)').matches // false
This is an open issue in Chrome.
This is a problem between Ubuntu and Chrome. Please check darkmood toggle with Ubuntu and Firefox. Then you can see it’s working without any issue.
So that's why I think it's a problem between Ubuntu and Chrome.
This is a known issue that is traceable through this page.