Invalid time in real time clock
ws at au.dyndns.ws
Thu Feb 6 15:25:19 UTC 2014
On Sun, 2014-02-02 at 15:23 +0000, Christian Weisgerber wrote:
> Christian Weisgerber <naddy at mips.inka.de> 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.
> Still, booting into the BIOS shows that the RTC keeps up, so it
> shouldn't be a battery problem. I cleared the RTC memory, set the
> date and time in the BIOS again, but I still get the warning and
> FreeBSD ignores the RTC. It looks like the RTCSD_PWR bit is stuck
> and there is no way to reset it.
When you say "the RTC keeps up" do you mean that the RTC keeps time when
mains power is removed - i.e. power cord unplugged for a "reasonable"
length of time? If the RTC doesn't "survive" complete removal of power
then you may want to double-check the CMOS jumper and battery.
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