Raspberry Pi - HDMI Control + Display Refresh

crontab

# Install by running `crontab -e` as pi user NOT root

44 09 * * 1-5 /usr/bin/tvservice -o
45 09 * * 1-5 /usr/local/bin/tv-on.sh
00 13 * * 1-5 /usr/local/bin/refresh.sh
00 14 * * 1-5 /usr/local/bin/refresh.sh
05 18 * * 1-5 /usr/bin/tvservice -o

refresh.sh

#!/bin/bash

export DISPLAY=:0
WID=$(xdotool search --onlyvisible --class chromium|head -1)
xdotool windowactivate ${WID}
xdotool key ctrl+F5

tv-on.sh

#!/bin/bash
/usr/bin/tvservice -o
sleep 1
/usr/bin/tvservice -p
fbset -depth 8
fbset -depth 16
xrefresh -d :0.0

export DISPLAY=:0
WID=$(xdotool search --onlyvisible --class chromium|head -1)
xdotool windowactivate ${WID}
xdotool key ctrl+F5

tv-on.sh (alternative version)

#!/bin/bash
/usr/bin/tvservice -o
sleep 1
/usr/bin/tvservice -p
fbset -depth 8
fbset -g 1920 1080 1920 1080 32
# fbset -depth 16
xrefresh -d :0.0

export DISPLAY=:0
WID=$(xdotool search --onlyvisible --class chromium|head -1)
xdotool windowactivate ${WID}
xdotool key ctrl+F5