Battery charging state: unknown

Battery charging state: unknown

[Daniel Hoffend]

Hello 

i have compiled my kernel (2.4.19) with the current patch
(acpi-20021022-2.4.19.diff.gz). The /proc/acpi/battery/BAT1/state shows
that there is an unknown charging stage, but when i remove the power 
supply of my Toshiba Notebook, then it turned to "discharging".


Power Supply on:
###################################
`cat /proc/acpi/battery/BAT1/state`
present:                 yes
capacity state:          ok
charging state:          unknown
present rate:            0 mA
remaining capacity:      4000 mAh
present voltage:         14800 mV


Power Supply off:
###################################
`cat /proc/acpi/battery/BAT1/state`
present:                 yes
capacity state:          ok
charging state:          discharging
present rate:            0 mA
remaining capacity:      3960 mAh
present voltage:         14800 mV


what is wrong ? is this a known problem, or has somebody a fix or patch
for it. 

Could this be one problem that my notebook doesn't switch to lower CPU
Speed?  (Intel Speedstep) the only possibility at this moment is for me
to set the Speed manually  via cpufreq patch. But there must be a
solution? 

Can somebody help me?

-- 
thanks

Daniel "Griffon" Hoffend




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Re: Battery charging state: unknown

[joerg.beyer-htSm2yLGOjU]

Daniel Hoffend <mail-nf-Mmb7MZpHnFY@public.gmane.org> schrieb am 07.11.02 23:09:43:
> Hello 
> 
> i have compiled my kernel (2.4.19) with the current patch
> (acpi-20021022-2.4.19.diff.gz). The /proc/acpi/battery/BAT1/state shows
> that there is an unknown charging stage, but when i remove the power 
> supply of my Toshiba Notebook, then it turned to "discharging".

I get this, when the Laptop is connected to power supply _and_
is fully charged.

I get "charging" (or something similar - I have the laptop not with
me right now), when it is charging.

    Joerg



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Re: Battery charging state: unknown

[Duncan Gibb]

On Fri, 2002-11-08 at 12:16, joerg.beyer-htSm2yLGOjU@public.gmane.org wrote:
> Daniel Hoffend <mail-nf-Mmb7MZpHnFY@public.gmane.org> schrieb am 07.11.02 23:09:43:

DH> /proc/acpi/battery/BAT1/state shows that there is an
DH> unknown charging stage

JB> I get this, when the Laptop is connected to power supply _and_
JB> is fully charged.

I thought this was odd too.  There are two relevant bits in the battery
status reply, bit 0 for discharging, bit 1 for charging.  The code does
this:

	if ((bst->state & 0x01) && (bst->state & 0x02))
		p += sprintf(p, "charging state:          charging/discharging\n");
	else if (bst->state & 0x01)
		p += sprintf(p, "charging state:          discharging\n");
	else if (bst->state & 0x02)
		p += sprintf(p, "charging state:          charging\n");
	else
		p += sprintf(p, "charging state:          unknown\n");


IMHO "unknown" is likely to worry people, when "not charging" can happen
for a number of reasons - eg: the battery is full, or there is another
battery in the system which is being used/charged in preference to this
one.

Dunno whether there are userland progs which rely on the existing code,
though.


Duncan




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Re: Battery charging state: unknown

[Daniel Hoffend]

Hello

where can i access to the real state bits to check witch bits are set
and compare with the results.


Daniel Hoffend



On Sam, Nov 09, 2002 at 05:02:37 +0000, Duncan Gibb wrote:
> On Fri, 2002-11-08 at 12:16, joerg.beyer-htSm2yLGOjU@public.gmane.org wrote:
> > Daniel Hoffend <mail-nf-Mmb7MZpHnFY@public.gmane.org> schrieb am 07.11.02 23:09:43:
> 
> DH> /proc/acpi/battery/BAT1/state shows that there is an
> DH> unknown charging stage
> 
> JB> I get this, when the Laptop is connected to power supply _and_
> JB> is fully charged.
> 
> I thought this was odd too.  There are two relevant bits in the battery
> status reply, bit 0 for discharging, bit 1 for charging.  The code does
> this:
> 
> 	if ((bst->state & 0x01) && (bst->state & 0x02))
> 		p += sprintf(p, "charging state:          charging/discharging\n");
> 	else if (bst->state & 0x01)
> 		p += sprintf(p, "charging state:          discharging\n");
> 	else if (bst->state & 0x02)
> 		p += sprintf(p, "charging state:          charging\n");
> 	else
> 		p += sprintf(p, "charging state:          unknown\n");
> 
> 
> IMHO "unknown" is likely to worry people, when "not charging" can happen
> for a number of reasons - eg: the battery is full, or there is another
> battery in the system which is being used/charged in preference to this
> one.
> 
> Dunno whether there are userland progs which rely on the existing code,
> though.
> 
> 
> Duncan
> 
> 
> 

-- 
mfg

Daniel "Griffon" Hoffend
Team FETTNET
Team LANparty.de
---
Visit :: http://fettnet.lanparty.de




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