ivan-aksamentov/fix_ubuntu_18_04_llvmpipe.sh

Created October 15, 2018 22:31

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Fix Ubuntu 18.04 fallback to llvmpipe software rendering when Nvidia driver is installed

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fix_ubuntu_18_04_llvmpipe.sh

	sudo rm -rf /usr/share/X11/xorg.conf.d/11-nvidia-prime.conf
	sudo rm -rf /usr/lib/xorg/modules/drivers/nvidia_drv.so

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ivan-aksamentov commented Oct 15, 2018 •

edited

nvidia_drv.so forces X11 to attempt to load Nvidia extensions even if the driver was installed with --no-opengl-files and we don't care about OpenGL on Nvidia GPU. This attempt fails, as there are no OpenGL libraries installed, and X11 for some reason falls back to software rendering, rather than trying Intel GPU.
Deleting nvidia_drv.so allows X11 to ignore Nvidia and to use Intel graphics instead. CUDA and other non-rendering functionality, such as NVENC, stay intact in any case.

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