some notes from my install of Debian testing with i3 over an LXDE base installation:
- 
xbacklightdoesn’t work as expected, you need to uselightinstead. You’ll also need tochmod +s $(which light)after installing.
- to get the touchpad working as expected, I added this to a file (as root) in /etc/X11/xorg.conf.d:
Section "InputClass"
	Identifier "touchpad"
	Driver "libinput"
	MatchIsTouchpad "on"
	Option "Tapping" "on"
EndSection
- the DPI is … interesting (see xdpyinfo | grep -B2 resolutionfor more info). To start with, I added this to a file in the same xorg.conf.d folder, again owned by root:
Section "Monitor"
	Identifier "eDP-1"
	DisplaySize 285 190
EndSection
and then added a file in /etc/X11/Xresources/ (201 is actually correct, but 144 looked better to me):
Xft.dpi: 144
- I also added this to the bottom of ~/.config/i3/config:
# EDITS
# needed for pkexec stuff
exec_always --no-startup-id lxpolkit
# ... no
focus_follows_mouse no
# backlight keys
bindsym XF86MonBrightnessDown exec --no-startup-id light -U 1
bindsym XF86MonBrightnessUp exec --no-startup-id light -A 1
- 
connmanwouldn’t hold a connection and was slow to reconnect. I ended up switching to NetworkManager, which works great.
- I’m still not getting great signal strength: Anyone else getting really bad wifi range? - #2 by Josh_Cook
edit: if you’re using steam, you’ll also want to run: echo "GDK_SCALE=2 steam" | sudo tee /usr/local/bin/steam && sudo chmod +x /usr/local/bin/steam to fix its DPI - it doesn’t respect X’s font DPI, just the toolkit’s scaling factor