X11

Pointer deceleration

xorg.conf.d

Section "InputClass"
    Identifier		"hi-res mouse"
    MatchIsPointer	"yes"
    MatchProduct	"ELECOM Scope Node Mouse"
    Option		"SendCoreEvents"		"on"
    Option		"Emulate3Buttons"		"on"
    Option		"AccelerationScheme"		"predictable"
    Option		"ConstantDeceleration"		"2.0"
    Option		"AdaptiveDeceleration"		"1.0"
EndSection

or directly with xinput:

xinput --set-prop 'pointer:Razer Razer Viper Mini' 'Device Accel Constant Deceleration' 1.333333

Disabling vsync

For nvidia:

__GL_SYNC_TO_VBLANK=0

For the rest:

vblank_mode=0

Turning the bell off

Add ~/.xinitrc entry:

xset -b

Autologin without display manager

Add /etc/inittab entry:

7:2345:respawn:/bin/login -f USERNAME tty1 </dev/tty1 >/dev/tty1 2>&1

Install libpam-ck-connector and comment out nox11 oprion in /etc/pam.d/common-session:

session	optional			pam_ck_connector.so

Add .profile entry:

exec startx

or its more elaborated version:

X=/tmp/.x

if [ ! -f "$X" ]; then
    touch "$X"
    startx
fi

Preventing .xsession-errors from growing infinitely

Open /etc/X11/Xsession with editor and change the line

exec >>"$ERRFILE" 2>&1

exec >"$ERRFILE" 2>&1

Change screen brightness

xrandr --output OUTPUT --brightness 0