From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Ruttenberg Subject: Re: Dell Inspiron i8100 with 2 batteries Date: Fri, 17 May 2002 11:25:47 -0400 Sender: linux-laptop-owner@vger.kernel.org Message-ID: <15589.8443.496770.786194@localhost.localdomain> References: <15589.5673.460356.221529@localhost.localdomain> Reply-To: rutt@chezrutt.com Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Id: Content-Type: text/plain; charset="us-ascii" To: dave@afrinc.com Cc: linux-laptop@vger.kernel.org I tried using ACPI, but it has shortcomings compared to APM. In particular, with APM, you can use the function-setup, function-battery buttons to get into the bios screens even while the kernel is running. I don't actually understand how this magic works, but it works with APM and not ACPI. David G Hamblen: > > I've got the same laptop with one battery, but I'm using ACPI. None of the > current user-space utilities parse this stuff particularly well (the > filenames in /proc/acpi have changed), but the data all look reasonable. > > #cat /proc/acpi/battery/BAT1/* > alarm: 3000 mWh > present: yes > design capacity: 57420 mWh > last full capacity: 57420 mWh > battery technology: rechargeable > design voltage: 14800 mV > design capacity warning: 3000 mWh > design capacity low: 1000 mWh > capacity granularity 1: 200 mWh > capacity granularity 2: 200 mWh > model number: LIP8084DLP > serial number: 40086 > battery type: LION > OEM info: Sony Corp. > present: yes > capacity state: ok > charging state: charging > present rate: unknown > remaining capacity: 56670 mWh > present voltage: 16746 mV > > Dave > > On Fri, 17 May 2002, John Ruttenberg wrote: > > > I thought I'd try to figure out that there were two batteries and divide by 2 > > or something like that. Perhaps the bios of this notebook is just broken, > > though. > > > > Alan Cox: > > > > of the batteries is less than 50% (according to the bios), then /proc/apm > > > > shows the battery power level X 2. If the combined charge of the batteries is > > > > greater than 50%, then /proc/apm shows: > > > > > > > > 1.16 1.2 0x03 0x01 0xff 0x10 -1% -1 ? > > > > > > > > I think this is because the bogus calculation it would make would result in a > > > > percentage > 100. > > > > > > > > I took a quick look at arch/i386/kernel/apm.c but it wasn't obvious what to > > > > do. > > > > > > The data basically comes from the BIOS as is > > > > > > > > - > > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > Please read the FAQ at http://www.tux.org/lkml/ > >