

It was one of the stated goals for Servo itself to be designed like that. But I don’t think anyone at Mozilla expected Servo to take over from Gecko. They were already quite happy that they were able to incorporate Servo’s style engine and URL bar implementation and such into Gecko.












I find that setting the power profile to “Power-Saver” makes a huge difference.
KDE has support for that built-in, although I’m not sure, if distributions install the corresponding daemon on desktop systems: https://gitlab.freedesktop.org/upower/power-profiles-daemon
You should be able to cycle through power profiles with Meta+B on KDE.
You can also see and change the profile via the systray icon for the battery, but on a desktop system, that presumably won’t be shown by default.
Otherwise,
powerprofilesctlis also an option, as described in that link.