Invalid time in real time clock

Christian Weisgerber naddy at
Sat Feb 1 22:47:55 UTC 2014

Christian Weisgerber <naddy at> wrote:

> atrtc0: WARNING: Battery failure indication
> Invalid time in real time clock.
> Check and reset the date immediately!
> Incongruously, the RTC time is actually correct.  Well, off by a
> minute or so.  Clearly the new battery is good.

Turns out I misunderstood this.  I thought the system time was still
set from the RTC despite the warning.  It isn't.  Instead, it is
set from the time stamp of the root file system.  That's why I lose
about a minute--that's the time it takes the machine to reboot.

Christian "naddy" Weisgerber                          naddy at

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