20240503解决Ubuntu20.04和WIN10双系统下WIN10的时间异常的问题

2024/5/3 9:33

缘起：因为工作需要，编译服务器上都会安装Ubuntu20.04。

但是因为WINDOWS强悍的生态系统，偶尔还是有必须要用WINDOWS的时候，于是也安装了WIN10。

双系统的通病，先安装WIN10，再安装Ubuntu20.04之后就会出现WIN10的系统时间晚8个小时的问题！

百度之后：WIN10 ubuntu20.04 时间

原因分析

出现这种情况的原因是 Windows 和 Ubuntu它们在默认情况下看待硬件时间(主板上的BOIS显示的时间)的方式不一样。

我们先来了解一下关于时间的概念：

UTC，即Universal Time Coordinated, 协调世界时

GMT，即Greenwich Mean Time, 格林尼治平时

RTC时间，即Real-time clock，是电脑的硬件时间

Windows 与 Linux 缺省看待系统硬件时间的方式是不一样的：

Linux 时钟分为系统时钟(System Clock)和硬件(RTC)时钟。Linux把硬件时间当作 UTC,系统时间是UTC时间经过换算得来的。比如说北京时间是GMT+8,则系统中显示时间是硬件时间+8。
Windows把系统硬件(RTC)时间当作本地时间(local time)，即系统时间跟BIOS中显示的时间(RTC)是一样的。

rootroot@rootroot-desktop:~$ sudo apt-get update
rootroot@rootroot-desktop:~$ timedatectl set-local-rtc 1 --adjust-system-clock
rootroot@rootroot-desktop:~$ sudo apt-get install ntpdate
rootroot@rootroot-desktop:~$ sudo ntpdate time.windows.com
rootroot@rootroot-desktop:~$ sudo hwclock --localtime --systohc

rootroot@rootroot-desktop:~$ sudo reboot

推荐使用

$ sudo ntpdate ntp.ntsc.ac.cn

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Win10 + Ubuntu20.04双系统下时间不同步问题

rootroot@rootroot-desktop:~$

rootroot@rootroot-desktop:~$ sudo apt-get update

[sudo] password for rootroot:

Get:2 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]

Get:5 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages [2,892 kB]

Get:6 http://security.ubuntu.com/ubuntu focal-security/main i386 Packages [743 kB]

Get:7 http://security.ubuntu.com/ubuntu focal-security/main Translation-en [436 kB]

Get:8 http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages [957 kB]

Get:9 http://security.ubuntu.com/ubuntu focal-security/universe i386 Packages [656 kB]

Get:10 http://security.ubuntu.com/ubuntu focal-security/universe Translation-en [201 kB]

Hit:1 http://mirrors.tuna.tsinghua.edu.cn/ubuntu focal InRelease

Get:3 http://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-updates InRelease [114 kB]

Hit:4 http://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-backports InRelease

Get:11 http://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-updates/main amd64 Packages [3,269 kB]

Get:12 http://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-updates/main i386 Packages [968 kB]

Get:13 http://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-updates/main Translation-en [518 kB]

Get:14 http://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-updates/universe amd64 Packages [1,183 kB]

Get:15 http://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-updates/universe i386 Packages [783 kB]

Get:16 http://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-updates/universe Translation-en [284 kB]

Fetched 13.1 MB in 25s (524 kB/s)

Reading package lists... Done

rootroot@rootroot-desktop:~$

rootroot@rootroot-desktop:~$ timedatectl set-local-rtc 1 --adjust-system-clock

rootroot@rootroot-desktop:~$

rootroot@rootroot-desktop:~$ sudo apt-get install ntpdate

Reading package lists... Done

Building dependency tree

Reading state information... Done

ntpdate is already the newest version (1:4.2.8p12+dfsg-3ubuntu4.20.04.1).

The following packages were automatically installed and are no longer required:

chromium-codecs-ffmpeg-extra gstreamer1.0-vaapi libgstreamer-plugins-bad1.0-0 libva-wayland2

Use 'sudo apt autoremove' to remove them.

0 upgraded, 0 newly installed, 0 to remove and 64 not upgraded.

rootroot@rootroot-desktop:~$

rootroot@rootroot-desktop:~$ sudo ntpdate time.windows.com

3 May 09:03:29 ntpdate[3002]: adjust time server 20.189.79.72 offset -0.013272 sec

rootroot@rootroot-desktop:~$

rootroot@rootroot-desktop:~$ sudo hwclock --localtime --systohc

rootroot@rootroot-desktop:~$

rootroot@rootroot-desktop:~$ sudo reboot

效果图：

参考资料：

【这个方法时搞不定的！】

https://blog.csdn.net/X_T_S/article/details/110142773

解决Ubuntu(20.04)和Windows10双系统时间不同步问题

rootroot@rootroot-desktop:~$

rootroot@rootroot-desktop:~$ sudo apt-get install ntpdate

[sudo] password for rootroot:

Reading package lists... Done

Building dependency tree

Reading state information... Done

The following packages were automatically installed and are no longer required:

chromium-codecs-ffmpeg-extra gstreamer1.0-vaapi libgstreamer-plugins-bad1.0-0 libva-wayland2

Use 'sudo apt autoremove' to remove them.

The following NEW packages will be installed:

ntpdate

0 upgraded, 1 newly installed, 0 to remove and 56 not upgraded.

Need to get 48.8 kB of archives.

After this operation, 178 kB of additional disk space will be used.

Get:1 http://mirrors.tuna.tsinghua.edu.cn/ubuntu focal-updates/universe amd64 ntpdate amd64 1:4.2.8p12+dfsg-3ubuntu4.20.04.1 [48.8 kB]

Fetched 48.8 kB in 21s (2,364 B/s)

Selecting previously unselected package ntpdate.

(Reading database ... 194529 files and directories currently installed.)

Preparing to unpack .../ntpdate_1%3a4.2.8p12+dfsg-3ubuntu4.20.04.1_amd64.deb ...

Unpacking ntpdate (1:4.2.8p12+dfsg-3ubuntu4.20.04.1) ...

Setting up ntpdate (1:4.2.8p12+dfsg-3ubuntu4.20.04.1) ...

Processing triggers for man-db (2.9.1-1) ...

rootroot@rootroot-desktop:~$

rootroot@rootroot-desktop:~$ sudo ntpdate time.windows.com

3 May 08:54:53 ntpdate[3089]: adjust time server 20.189.79.72 offset -0.021819 sec

rootroot@rootroot-desktop:~$

rootroot@rootroot-desktop:~$ sudo hwclock --localtime --systohc

rootroot@rootroot-desktop:~$

rootroot@rootroot-desktop:~$ sudo reboot