Display resolution
echo “Xft.dpi: 280” > ~/.Xresources
Mouse cursor
20.04
Set the following environment variable in session settings.
XCURSOR_SIZE
=100
Before 20.04
Taken from here.
In the .config/lxsession/Lubuntu/desktop.conf change the following line:
iGtk/CursorThemeSize=72
Brightness shortcuts
20.04
Preferences > LXQt settings > Shortcut Keys
Before 20.04

Firefox
Size of menus and tool bars
Taken from here.
(1) In a new tab, type or paste about:config in the address bar and press Return. Click the button accepting the risk.
(2) In the filter box, type or paste devp and pause while the list is filtered — there should only be one preference left.
(3) The layout.css.devPixelsPerPx normally has -1.0 which follows the Windows Text Size setting.
Double-click to open a small dialog where you can type a new value.

System font scale
Taken from here.
- open new tab
- enter “about:config” in the address field
- search for the option “font.size.systemFontScale” (using the search)
- change the value from 100 to something lower, e.g. 80
