Subject: Re: Bogus ACPI battery information in recent current
To: Steven M. Bellovin <email@example.com>
From: Steven M. Bellovin <firstname.lastname@example.org>
Date: 12/15/2007 20:54:45
On Sat, 15 Dec 2007 18:42:24 +0000
"Steven M. Bellovin" <email@example.com> wrote:
> On Sat, 15 Dec 2007 10:59:30 -0700
> Sverre Froyen <firstname.lastname@example.org> wrote:
> > Hi,
> > After a cvs update this morning, envstat reports sensible values for
> > the battery and the delays are gone (fixed perhaps by acpi_ec.c
> > revision 1.46).
> I think I'm still seeing some delays, though I haven't monitored that
> closely. I did run 'envstat -i 5' for about 45 minutes, with no
> failures of battery charge level or state.
In a 2 hour test, polling battery state every 5 seconds (envstat -i 5),
I'm still seeing some failures, though not as many as before:
$ sort /tmp/battlog | uniq -c
3 charge: 64.480 Wh (95.81%)
297 charge: 65.610 Wh (97.49%)
563 charge: 65.630 Wh (97.52%)
1 charge: 412.640 Wh (613.14%)
4 charge: 417.760 Wh (620.74%)
819 charge state: NORMAL
49 charge state: CRITICAL
Also note that it only did 868 polls; in two hours, it should have done
1440 of them if each poll took 0 time.
> > There is a (minor) remaining issue in that the AC adaptor is
> > reported as ON (present) even when I disconnect it.
> Hmm -- does estd notice that it's disconnected?
On my T42, powerd does notice AC adapter disconnects.
--Steve Bellovin, http://www.cs.columbia.edu/~smb