Linux · Graphics System (X11/Wayland)

On an Optimus Ubuntu laptop with nvidia-prime installed, what does prime-select do and what's the catch with each mode?

Answer locked. Get the free KnowCard app to reveal it — plus spaced-repetition review so it actually sticks.

This is one card from the KnowCard library — thousands more across SAP, Linux, Python and more. In the app you get the answer, AI explanations, and cards that come back right before you would forget them. Free to start on iOS, Android or the web.

More in Graphics System (X11/Wayland)

You installed Linux on a laptop with an NVIDIA GPU and after enabling Secure Boot the machine boots but never reaches a graphical login. What single UEFI setting is the usual cause?

During an Ubuntu install on a machine with an NVIDIA GPU, which boot-menu choice keeps the graphics system from failing to start before drivers are in place?

On Ubuntu, when the desktop won't come up because no graphics driver is loaded, how do you find and install the right proprietary driver purely from a text console?

Given only that you're running GNOME, why is GNOME the safest bet for using Wayland by default rather than any other desktop?

Wayland has been the default direction for years, yet one specific class of hardware is called out as the last major obstacle to its widespread use. Which one, and why?

You log into GNOME on an NVIDIA box expecting Wayland because the distro defaults to it, but the session turns out to be X. What behavior of many distributions explains this?

Start learning today

Free to start — download the app or use it in your browser.