按照维基制作RK3399制作无图形界面的ubuntu系统，无法启动，卡在[ OK ] Started Update UTMP about System Runlevel Changes.这里，请问是怎么回事？
串口输出如下：
[ OK ] Started Create Volatile Files and Directories.
Starting Update UTMP about System Boot/Shutdown…
Starting Network Time Synchronization…
[ OK ] Started Update UTMP about System Boot/Shutdown.
[ OK ] Started Network Time Synchronization.
[ OK ] Reached target System Initialization.
[ OK ] Reached target Basic System.
Starting Permit User Sessions…
[ OK ] Started Daily Cleanup of Temporary Directories.
Starting getty on tty2-tty6 if dbus and logind are not available…
Starting LSB: Set the CPU Frequency Scaling governor to “ondemand”…
[ OK ] Reached target System Time Synchronized.
[ OK ] Started Daily apt activities.
[ OK ] Reached target Timers.
[ OK ] Started Permit User Sessions.
[ OK ] Started getty on tty2-tty6 if dbus and logind are not available.
[ OK ] Started LSB: Set the CPU Frequency Scaling governor to “ondemand”.
[ OK ] Started Raise network interfaces.
[ OK ] Reached target Network.
Starting OpenBSD Secure Shell server…
Starting /etc/rc.local Compatibility…
[ OK ] Started /etc/rc.local Compatibility.
[ OK ] Started Getty on tty2.
[ OK ] Started Getty on tty5.
[ OK ] Started Getty on tty1.
[ OK ] Started Getty on tty3.
[ OK ] Started Getty on tty6.
[ OK ] Started Getty on tty4.
[ OK ] Started OpenBSD Secure Shell server.
[ TIME ] Timed out waiting for device dev-ttyFIQ0.device.
[DEPEND] Dependency failed for Serial Getty on ttyFIQ0.
[ OK ] Reached target Login Prompts.
[ OK ] Reached target Multi-User System.
[ OK ] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes…
[ OK ] Started Update UTMP about System Runlevel Changes.