[arch-general] DPMS not working with fbdev driver

[Ralf Mardorf]

Ensure that nothing overwrites the settings, e.g. xscreensaver,
xfce4-power-manager or anything else. I set up

Section "ServerFlags"
    Option "BlankTime" "0"
    Option "StandbyTime" "0"
    Option "SuspendTime" "0"
    Option "OffTime" "0"
EndSection

by xorg.conf and then use xscreensaver-command or
xfce4-power-manager-settings or xset dpms force && xset to set up the
wanted values, when the CRT-Monitor should go to sleep.

For my openbox Arch Linux I use xfce4-power-manager.

[rocketmouse at archlinux ~]$ xset q | grep -A2 "Screen Saver:"
Screen Saver:
  prefer blanking:  yes    allow exposures:  yes
  timeout:  540    cycle:  0
[rocketmouse at archlinux ~]$ xset q | grep -A3 "DPMS (Energy Star):"
DPMS (Energy Star):
  Standby: 600    Suspend: 0    Off: 3000
  DPMS is Enabled
  Monitor is On

The monitor is turned off after a while. However, I have different
Linux installs and IMO xfce4-power-manager isn't the best choice.
However, I have no issues with using different xfce4-power-manager or
xscreensaver profiles, but I'm lazy, so my momentarily scripts aren't a
pleasure to read.

Maybe this does help:

[rocketmouse at archlinux ~]$
cat .config/xfce4/xfconf/xfce-perchannel-xml/xfce4-power-manager.xml
<?xml version="1.0" encoding="UTF-8"?>

<channel name="xfce4-power-manager" version="1.0">
  <property name="xfce4-power-manager" type="empty">
    <property name="dpms-on-ac-sleep" type="uint" value="10"/>
    <property name="dpms-on-ac-off" type="uint" value="50"/>
    <property name="show-tray-icon" type="int" value="0"/>
    <property name="blank-on-ac" type="int" value="9"/>
    <property name="presentation-mode" type="bool" value="false"/>
    <property name="general-notification" type="bool" value="false"/>
  </property>
</channel>