Arch Linux

prayner96

Member

Registered: 2022-03-06

Posts: 72

[SOLVED] Dual boot (Windows 11) clock sync

I was having clock syncing issues when dual booting arch and W11. I followed section 3 and 3.1 of https://wiki.archlinux.org/title/System_time and now the UTC/local time and timezone are accurate on Arch.

Output

$ sudo timedatectl
               Local time: Mon 2022-10-31 14:10:23 CET
           Universal time: Mon 2022-10-31 13:10:23 UTC
                 RTC time: Mon 2022-10-31 13:10:23
                Time zone: Europe/REDACTED (CET, +0100)
System clock synchronized: no
              NTP service: inactive
          RTC in local TZ: no 

However, when I boot Windows 11, the time is on UTC (one hour behind). The time is not automatically updated nor is the DST setting activated. Not sure how to fix this without affecting Arch.

Last edited by prayner96 (2022-10-31 17:35:46)

prayner96

Member

Registered: 2022-03-06

Posts: 72

Re: [SOLVED] Dual boot (Windows 11) clock sync

I think the solution is:

To change the hardware clock time standard to localtime, use:

# timedatectl set-local-rtc 1

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,729

Re: [SOLVED] Dual boot (Windows 11) clock sync

You're better off setting Windows to use UTC, as the link you gave says.

prayner96

Member

Registered: 2022-03-06

Posts: 72

Re: [SOLVED] Dual boot (Windows 11) clock sync

Windows is using UTC as mentioned. My solution worked.

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,729

Re: [SOLVED] Dual boot (Windows 11) clock sync

If Windows was using UTC, you wouldn't have a problem and your 'solution' would have just caused more problems.