[Bug 299337] Time is behind in a FreeBSD UTM VM after it wakes up from sleep

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 12 Oct 2026 16:18:35 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=299337

            Bug ID: 299337
           Summary: Time is behind in a FreeBSD UTM VM after it wakes up
                    from sleep
           Product: Base System
           Version: 16.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: yuri@freebsd.org

16-CURRENT is running in a UTM VM on a very new MacBook laptop.
Initially the time is synced with an outside NTP server. The time is running
fine. ntpd is not running.

How to reproduce the problem:
1. Suspend the host system by closing the laptop lid and disconnecting power.
2. Wake it up after 5 minutes.
3. Observe that the time is behind by ~30 secs.

The problem is reproducible.

It looks like FreeBSD updates the time after it wakes up but it doesn't update
it correctly.

The time is behind by 30 secs, not 5 minutes.

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