Flickering LXDM fixed, solution comes here: sudo nano /etc/lxdm/default.conf
Change
[display] gtk_theme=ClearLooks bg=/usr/share/lubuntu/wallpapers/lubuntu-default-wallpaper.png bottom_pane=1 lang=1 theme=Lubuntu
to
[display] gtk_theme=ClearLooks #bg=/usr/share/lubuntu/wallpapers/lubuntu-default-wallpaper.png bottom_pane=1 lang=1 theme=Lubuntu
In short: comment background off.
Flickering LXDM fixed, solution comes here: default. conf
sudo nano /etc/lxdm/
Change
[display] ClearLooks share/lubuntu/ wallpapers/ lubuntu- default- wallpaper. png
gtk_theme=
bg=/usr/
bottom_pane=1
lang=1
theme=Lubuntu
to
[display] ClearLooks share/lubuntu/ wallpapers/ lubuntu- default- wallpaper. png
gtk_theme=
#bg=/usr/
bottom_pane=1
lang=1
theme=Lubuntu
In short: comment background off.