gpu-manager is responsible for overwriting your X config file. Commenting out the "start on" lines at the top of gpu-manager's upstart script located at /etc/init/gpu-manager.conf will temporarily disable gpu-manager and prevent xorg.conf from being changed.
gpu-manager is responsible for overwriting your X config file. Commenting out the "start on" lines at the top of gpu-manager's upstart script located at /etc/init/ gpu-manager. conf will temporarily disable gpu-manager and prevent xorg.conf from being changed.