Re: ACPI and anacron
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Am Sonntag, 10. August 2003 12:14 schrieb Matteo Vescovi:
> I've got a problem: since I upgraded from APM to ACPI, anacron doesn't work
> properly anymore. At boot time, the /etc/init.d/anacron script is not able
> to test the presence of "on_ac_power"; so it supposes that I'm always on
> battery power and the message is the same everyday:
> "Starting anac(h)ronistic cron: deferred while on battery power."
> What should I do now? The comment inside the anacron script says it only
> tests the presence of AC power thru the APM module: what about ACPI?
The anacron start-script uses the script /usr/bin/on_ac_power to check whether
we're on battery power. The fault lies there as it checks for AC adapters in
/proc/acpi/0/. At my system the related acpi files are in
/proc/acpi/ac_adapter/. So my workaround is: I changed the acpi path from
/proc/acpi/0/ to /proc/acpi/ac_adapter/ in /usr/bin/on_ac_power. Maybe the
path varies in different systems, I don't know. So you should check whether
/proc/acpi/ac_adapter is the correct path at your system, or whether the
related files are somewhere else in /proc/acpi/.
Another workaround is, if you're not running on a laptop, to skip the battery
check by commenting out the related lines in /etc/init.d/anacron. These are
the lines beginning with
if test -x /usr/bin/on_ac_power (line 11 at my version)
and ending with
fi (line 19, the second one, which finishes the if-construction in line
11)
Btw, although the comment in /etc/init.d/anacron says so not only apm is
checked but also acpi and pmu.
Carsten
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