Creates a service which automatically restarts chronyd after suspend or hibernation upon resume

chronyd-restart.sh

cat > /usr/lib/systemd/system/chronyd-restart-after-sleep.service <<'EOF'
[Unit]
Description=Restart Bluetooth after resume
After=suspend.target hibernate.target hybrid-sleep.target suspend-then-hibernate.target

[Service]
Type=simple
ExecStart=/usr/bin/systemctl --no-block restart chronyd
#ExecStart=/usr/bin/systemctl --no-block restart bluetooth.service

[Install]
WantedBy=suspend.target hibernate.target hybrid-sleep.target suspend-then-hibernate.target
EOF

systemctl enable chronyd-restart-after-sleep