Hello. There is, it seems, a problem with the hardware clock. That is, the systemd does not care about it. Neither systemd nor udev rules set the system time using the hardware clock. From what I know, if the clock is a cmos rtc, the kernel always sets time during bootup. In any other case, it should do this anyway if it is configured to do so during compilation, but only when appropriate rtc support is compiled into the kernel. So, userspace does not have to. The problem is that there are cases when the rtc is not a cmos one, and the driver is compiled as a module. This is a specific case because the kernel will not restore the time, and systemd does not do this either. The thing that restores the time is ntp synchronization and that is not related to the hardware clock. This issue is visible in case of arm boards with external realtime clocks, as those clocks are bought separately and not part of the platform. It would be nice if systemd would set the time, or if udev had a rule to do this, or both (in case the module was loaded earlier during initramfs phase). Or any other solution for that would be nice.
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