В каталог /etc/X11/fly-dm положить файл Xsetup
Xsetup
#! /bin/sh
# Xsetup - run as root before the login dialog appears
  
#xconsole -geometry 480x130-0-0 -notify -verbose -fn fixed -exitOnFail -file /dev/xconsole &
  
if [ -x /usr/sbin/pdp-flbl ]; then
  find /dev/dri -type c -exec /usr/sbin/pdp-flbl :::ehole {} \;
  find /dev -name nvidia*  -type c -exec /usr/sbin/pdp-flbl :::ehole {} \;
  /usr/sbin/pdp-flbl -R :::ehole /proc/driver/nvidia \;
fi
  
/usr/bin/fly-dm-set-dpi.sh