Comment 31 for bug 1245474

I also can confirm this works. Thank you, Eugene!

It took me an embarrassing number of tries to get this right, so for others wanting to implement this work-around:

  printf '\n[SeatDefaults]\ndisplay-setup-script=/usr/bin/bug1245474-work-around.sh\n' |sudo tee /etc/lightdm/lightdm.conf.d/60-display-setu-script.conf
  sudo chmod 644 /etc/lightdm/lightdm.conf.d/60-display-setu-script.conf
  printf '( sleep 10; xset dpms 120 125 130 ) &\n' |sudo tee /usr/bin/bug1245474-work-around.sh
  sudo chmod 755 /usr/bin/bug1245474-work-around.sh

Don't forget to reboot.