RPi desktop系统重启或关机挂起几个问题：plymouth-reboot.service、plymouth-poweroff.service、Deconfiguring network interfaces

case "$1" in
start)
        if init_is_upstart; then
                exit 1
        fi
        process_options
        check_ifstate

        if [ "$CONFIGURE_INTERFACES" = no ]
        then
            log_action_msg "Not configuring network interfaces, see /etc/default/networking"
            exit 0
        fi
        set -f
        exclusions=$(process_exclusions)
        log_action_begin_msg "Configuring network interfaces"
        if [ -x /sbin/udevadm ]; then
                if [ -n "$(ifquery --list --exclude=lo)" ] || [ -n "$(ifquery --list --allow=hotplug)" ]; then
                        udevadm settle || true
                fi
        fi
        if ifup -a $exclusions $verbose && ifup_hotplug $exclusions $verbose
        then
            log_action_end_msg $?
        else
            log_action_end_msg $?
        fi
        ;;

stop)
        if init_is_upstart; then
                exit 0
        fi
        check_network_file_systems
        check_network_swap

        log_action_begin_msg "Deconfiguring network interfaces"
        if ifdown -a --exclude=lo $verbose; then
            log_action_end_msg $?
        else
            log_action_end_msg $?
        fi
        ;;

reload)
        if init_is_upstart; then
                exit 1
        fi
        process_options

        log_action_begin_msg "Reloading network interfaces configuration"
        state=$(ifquery --state)
        ifdown -a --exclude=lo $verbose || true
        if ifup --exclude=lo $state $verbose ; then
            log_action_end_msg $?
        else
            log_action_end_msg $?
        fi
        ;;

force-reload|restart)
        if init_is_upstart; then
                exit 1
        fi
        process_options

        log_warning_msg "Running $0 $1 is deprecated because it may not re-enable some interfaces"
        log_action_begin_msg "Reconfiguring network interfaces"
        ifdown -a --exclude=lo $verbose || true
        set -f
        exclusions=$(process_exclusions)
        if ifup -a --exclude=lo $exclusions $verbose && ifup_hotplug $exclusions $verbose
        then
            log_action_end_msg $?
        else
            log_action_end_msg $?
        fi
        ;;

*)
        echo "Usage: /etc/init.d/networking {start|stop|reload|restart|force-reload}"
        exit 1
        ;;
esac

exit 0

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