[ltp] Re: Poor Battery life of T40 (2379-D5U)
Binary Xerroz
linux-thinkpad@linux-thinkpad.org
Wed, 26 May 2004 21:27:15 +0000
I dunno, i dont think you can control the state, ive tried with no results
howver i just turned xmms on which puts the processor in C2 state, and just
lost an hour of battery >.< so sad id be nice if we could get a fix for this
:(
01011000 01100101 01110010 01110010 01101111
01111010 00001101 00001010 01111000 00111000
00110110 00100000 01000001 01110011 01110011
01100101 01101101 01100010 01101100 01100101
01110010 00100000 01000011 01101111 01100100
01100101 01110010 00001101 00001010 01000001
00100000 01011100 00100111 01010000 01110010
01101111 01100110 01100101 01110011 01110011
01101001 01101111 01101110 01100001 01101100
01011100 00100111 00000000 00000000 00000000
>From: "Piotr Gawrysiak" <pgawrysiak@supermedia.pl>
>Reply-To: linux-thinkpad@linux-thinkpad.org
>To: <linux-thinkpad@linux-thinkpad.org>
>Subject: Re: [ltp] Re: Poor Battery life of T40 (2379-D5U)
>Date: Wed, 26 May 2004 23:14:24 +0200
>
>A bit off topic but - is it possible to manually set the power states (and
>btw - what [is it sth. in kernel or sth. else?] controls CPU state
>switches)? For example - I would like to have my CPU in C1 constantly when
>on AC power, and enable power management when using battery (nb. C3 is
>efficient but many Thinkpads are quite noisy when this state is active - on
>my T21 speakers emit strange high pitched noise (something coming from
>power
>converter maybe?) - not loud but unnerving...). For now I just switched off
>CPU power management in BIOS, what apparently shut it down for ACPI, but
>this is not a solution...
>
>Piotr Gawrysiak
>
>
>
>----- Original Message -----
>From: "jlintz" <jlintz@optonline.net>
>To: <linux-thinkpad@linux-thinkpad.org>
>Sent: Wednesday, May 26, 2004 10:42 PM
>Subject: RE: [ltp] Re: Poor Battery life of T40 (2379-D5U)
>
>
> > What battery life do you see now around?
> >
> > -----Original Message-----
> > From: linux-thinkpad-admin@linux-thinkpad.org
> > [mailto:linux-thinkpad-admin@linux-thinkpad.org] On Behalf Of Binary
>Xerroz
> > Sent: Wednesday, May 26, 2004 4:37 PM
> > To: linux-thinkpad@linux-thinkpad.org
> > Subject: RE: [ltp] Re: Poor Battery life of T40 (2379-D5U)
> >
> > Actually i was using APM and thats where my poor battery life problem
>was
> > comming from...
> > recently my dsl died so i was left with no internet, so i rebuilt my
>kernel
> > and was messing around with ACPI, well i built the acpi cpufreq module
>and
> > suddenly my battery life jumped!!! apparently the problem was with APM
>or
> > earlier ACPI the processor was aslways in C1 instead of C2 or C3 power
> > states, returning to C3 power state gave me a HUGE jump in battery
> > life...now the only problem is my wifi doesnt work when processor is in
>C3
> > state... :(
> >
> > 01011000 01100101 01110010 01110010 01101111
> > 01111010 00001101 00001010 01111000 00111000
> > 00110110 00100000 01000001 01110011 01110011
> > 01100101 01101101 01100010 01101100 01100101
> > 01110010 00100000 01000011 01101111 01100100
> > 01100101 01110010 00001101 00001010 01000001
> > 00100000 01011100 00100111 01010000 01110010
> > 01101111 01100110 01100101 01110011 01110011
> > 01101001 01101111 01101110 01100001 01101100
> > 01011100 00100111 00000000 00000000 00000000
> >
> >
> >
> >
> > >From: edonia <podimeter@hotmail.com>
> > >Reply-To: linux-thinkpad@linux-thinkpad.org
> > >To: linux-thinkpad@linux-thinkpad.org
> > >Subject: [ltp] Re: Poor Battery life of T40 (2379-D5U)
> > >Date: Tue, 25 May 2004 23:56:08 +0800
> > >
> > >Am Mon, 24 May 2004 20:49:21 +0000 schrieb Binary Xerroz:
> > >
> > > > i recently bought a Thiinkpad T40 as my first laptop; and all in all
>im
> > > > very happy with it. i can do all my developing on it and i can even
> > >play
> > > > ET for the most part; however, one thing i am dissatisfied, is the
> > >battery
> > > > life the the T40 compared to windows. at full charge windows will
>give
> > >me
> > > > nearly 5 good hours, however, linux, has a hard time giving me 3!
>ive
> > >done
> > > > everything i can think of; cpu is throttled to 600mhz, hard disk is
>on
> > > > standby, cdrom on standby, etc etc. the only thing really working is
>the
> > > > fan (which never seems to want to turn off) and the wifi card. but
>even
> > > > in windows i have the wifi card going so i know that cant be eating
> > >nearly
> > > > 2 hours of battery. a friend of mine has a T40, a slightly older
>model
> > >and
> > > > he claims nearly 5 hours on linux. so i have no idea why im getting
>such
> > > > poor results from linux, i recently just sent the unit back due to
> > > > overheating problem and they replaced teh mobo and said battery
>needed
> > > > replacing, so i got a brand new one, and i got 30 mins more (to make
>the
> > > > 3hours max). I just ordered a 9cell battery and an ultrabay battery
>to
> > > > help but i would really like to be able to get something near the
> > >windows
> > > > battery life. any suggestions? Thank you.
> > > >
> > > > Linux 2.6.6
> > > > SpeedFreq
> > > > hdparm -c0 -d0 -B254 -S4 /dev/hda
> > > >
> > > >
> > > > 01011000 01100101 01110010 01110010 01101111 01111010 00001101
>00001010
> > > > 01111000 00111000 00110110 00100000 01000001 01110011 01110011
>01100101
> > > > 01101101 01100010 01101100 01100101 01110010 00100000 01000011
>01101111
> > > > 01100100 01100101 01110010 00001101 00001010 01000001 00100000
>01011100
> > > > 00100111 01010000 01110010 01101111 01100110 01100101 01110011
>01110011
> > > > 01101001 01101111 01101110 01100001 01101100 01011100 00100111
>00000000
> > > > 00000000 00000000
> > > >
> > > > _________________________________________________________________
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> > >
> > >
> > >I get about 5 hours on my T40p.
> > >The poor battery life semms to depend on the hole ACPI supplyment. I
>guess
> > >some or most of the hardware does not save what could be saved.
> > >
> > >example:
> > >if you use the madwifi with the thermal and processor module, the card
> > >will contiuosly reset.
> > >Or if i use the internal modem, the processor goes up to 1600...
> > >
> > >So what i would try in youre case:
> > >1. Try to use a fixed DSDT Table from http://acpi.sourceforge.net/
> > >then compare!
> > >2. Try amp and compare the time
> > >
> > >No further ideas. I guess it will take a long time to improve acpi so
>far,
> > >for all the hardware out there...
> > >
> > >edonia
> > >
> > >
> > >
> > >--
> > >The linux-thinkpad mailing list home page is at:
> > >http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
> >
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> >
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