VirtualBox中安装的deepin或UOS时间显示异常，与当前时间差8小时，且控制中心“时间日期”中“自动同步配置”默认关闭，手动打开也无效。只有安装并启动NTP服务，时间才能恢复正常。终端执行timedatectl，显示如下：

$ timedatectl
Local time: 四 2022-03-03 11:50:49 CST
Universal time: 四 2022-03-03 03:50:49 UTC
RTC time: 四 2022-03-03 11:50:49
Time zone: Asia/Shanghai (CST, +0800)
System clock synchronized: no
NTP service: inactive
RTC in local TZ: yes

Warning: The system is configured to read the RTC time in the local time zone.
This mode cannot be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.

实体机中安装deepin或UOS，执行timedatectl显示

System clock synchronized: yes
NTP service: active

试过在VirtualBox中安装ubuntukylin，时间没有问题。在VMWare中安装deepin或UOS，时间也没有问题。