##  using stock kernel, so this check is unnecessary
#if uname -r | grep -e "-vaioz$" >/dev/null
#then
        CFILES="$(files_present)"
        echo "GFX files on system: $CFILES"
        [ "$(cat /sys/devices/platform/sony-laptop/speed_stamina)" = "stamina" ] && from_nvidia || to_nvidia
#fi