Bug#849208: Nvidia driver does not use DPMS

[Richard B. Kreckel]

Package: nvidia-driver
Version: 375.20-4

The screen blanks, but the backlight is never turned off.

It seems like DPMS is not enabled?
$ xset -q
[...]
DPMS (Energy Star):
  Standby: 0    Suspend: 0    Off: 0
  DPMS is Disabled

This is the card:
$ nvidia-detect
Detected NVIDIA GPUs:
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK208
[GeForce GT 730] [10de:1287] (rev a1)

DPMS used to work on the same hardware when it was still running jessie.