X11

För att kolla vilken desktop manager som körs

echo $XDG_CURRENT_DESKTOP

Settings

i ~/.config/monitors.xml lagras setup för skärmarna, om det finns flera configuration kommer alla att provas tills det blir rätt vilket tar en massa tid. Nedan ger fem skärmar.

$> cat .config/monitors.xml
<monitors version="2">
  <configuration>
    <logicalmonitor>
      <x>0</x>
      <y>1080</y>
      <scale>1</scale>
      <monitor>
        <monitorspec>
          <connector>GPU-1.HDMI-0</connector>
          <vendor>AUS</vendor>
          <product>VG248</product>
          <serial>LALMQS106201</serial>
        </monitorspec>
        <mode>
          <width>1920</width>
          <height>1080</height>
          <rate>60</rate>
        </mode>
      </monitor>
    </logicalmonitor>
    <logicalmonitor>
      <x>1920</x>
      <y>1080</y>
      <scale>1</scale>
      <primary>yes</primary>
      <monitor>
        <monitorspec>
          <connector>GPU-0.DVI-I-1</connector>
          <vendor>AUS</vendor>
          <product>VG248</product>
          <serial>L3LMQS152891</serial>
        </monitorspec>
        <mode>
          <width>1920</width>
          <height>1080</height>
          <rate>60</rate>
        </mode>
      </monitor>
    </logicalmonitor>
    <logicalmonitor>
      <x>3840</x>
      <y>1080</y>
      <scale>1</scale>
      <monitor>
        <monitorspec>
          <connector>GPU-0.HDMI-0</connector>
          <vendor>AUS</vendor>
          <product>VG248</product>
          <serial>LALMQS177974</serial>
        </monitorspec>
        <mode>
          <width>1920</width>
          <height>1080</height>
          <rate>60</rate>
        </mode>
      </monitor>
    </logicalmonitor>
    <logicalmonitor>
      <x>1920</x>
      <y>0</y>
      <scale>1</scale>
      <monitor>
        <monitorspec>
          <connector>GPU-1.DVI-D-0</connector>
          <vendor>AUS</vendor>
          <product>VG248</product>
          <serial>L3LMQS158971</serial>
        </monitorspec>
        <mode>
          <width>1920</width>
          <height>1080</height>
          <rate>60</rate>
        </mode>
      </monitor>
    </logicalmonitor>
  </configuration>
</monitors>

Login skärmen

om gdm3 körs så skall monitor.xml kopieras till
/var/lib/gdm3/.config/monitors.xml
samt
sudo nano -w /etc/gdm3/custom.conf
Där sätter man
WaylandEnable=false

Skärmbakgrund

Använd gnome tweaks av John Stowers

sudo apt install gnome-tweaks

Skärmsläckare

sudo add-apt-repository universe
sudo apt-get update
sudo apt-get install xscreensaver-gl
sudo apt-get install xscreensaver xscreensaver-data-extra xscreensaver-gl-extra