There’s a bunch of GUI options nowadays, but it depends on your distro and model of GPU. For example I used envy control but also System76-power (popOS).
You technically don’t need either since modern Linux drivers will handle offloading work to your dGPU when an application asks, but for ultimate power saving or for specific hardware quirks (such as struggling to get HDMI out working in hybrid mode) you may want direct control.
For the average gamer who uses their laptop as their primary device and screen you probably don’t need to bother.
There’s a bunch of GUI options nowadays, but it depends on your distro and model of GPU. For example I used envy control but also System76-power (popOS).
You technically don’t need either since modern Linux drivers will handle offloading work to your dGPU when an application asks, but for ultimate power saving or for specific hardware quirks (such as struggling to get HDMI out working in hybrid mode) you may want direct control.
For the average gamer who uses their laptop as their primary device and screen you probably don’t need to bother.