Blender is not using CUDA, aulthough it is configured to do so I'm using Pop!_OS 17.10 (based on Ubuntu 17.10) on a Dell XPS 15 9560 and Blender 2.79b. CUDA is installed, the Nvidia GPU (GeForce GTX 1050) activated and Blender is recognising both:



But when I hit render, it's rendering on the CPU:



This is my second Pop!_OS installation because I messed up the previous one. But before, Blender was rendering on the GPU as expected. Am I missing something here? How can I make this work again?
on your render settings, make sure you have the rendering device set to GPU and not CPU, selecting CUDA on user preferences only enables the option to render with a GPU but you still need to change it on the render settings