Bug#601345: linux-image-2.6.32: wrong battery charge level
----- Forwarded message from Oz Nahum Tiram <firstname.lastname@example.org> -----
From: Oz Nahum Tiram <email@example.com>
To: Ben Hutchings <firstname.lastname@example.org>
Subject: Re: Bug#601345: linux-image-2.6.32: wrong battery charge level
Date: Mon, 25 Oct 2010 19:08:59 +0200
I have compiled linux kernel 2.6.34, and I have installed all the
linux-kernels with vesions 2.6.31.
At the moment, I have 3 operating systems on this laptop.
When I install the kernel package of Ubuntu 9.10 (2.6.31) in Ubuntu 10.10,
this issue does not occur.
I could not find a debian package of 2.6.31, but like I said, I tried all
the others possible, and it did occur ...
So I believe that this issue is kernel related.
On Mon, Oct 25, 2010 at 6:47 PM, Ben Hutchings <email@example.com> wrote:
> On Mon, 2010-10-25 at 13:47 +0200, Oz Nahum Tiram wrote:
> > Package: linux-2.6
> > Version: 2.6.32-26
> > File: linux-image-2.6.32
> > Severity: important
> > *** Please type your report below this line ***
> > Hi,
> > I have a laptop which came installed with Ubuntu 9.10. I decided to
> > install Debian on it. I have found that on kernels >2.6.31 the power
> > manager indicated the wrong charge level. Even though the battery is
> > FULLY charged, the battery indicator says it has only ~20%.
> > If I installed older kernels from snapshot.debian.org I didn't have
> > that problem (However font smoothing with older kernel is
> > horrible...).
> > I have seen similar bug reports in Ubuntu, but I wish this bug is
> > handled also in Debian.
> > My laptop battery info is:
> > Vendor: CZCTech
> > Model: U13
> > Serial Number: SN0000
> > info from lshw:
> > description: Notebook
> > product: czc
> > vendor: BRUNEN IT Group
> > version: 1.0
> > *-battery
> > description: Nickel Cadmium Battery
> > product: Nikon Ultra Plus
> > vendor: Nikon Battery
> > physical id: 1
> > version: 08/11/97
> > serial: NI00123
> > slot: Left side of System
> This information reported by lshw comes from the BIOS and the battery,
> and it is complete nonsense! I expect that the BIOS is providing
> similarly bogus information about the charge state. But I don't know
> why the ACPI battery driver would have changed the way it interprets
> > See thread here for example:
> > http://ubuntuforums.org/showthread.php?t=1543467&page=2
> This could be a similar problem, though no-one seems to specifically say
> that this bug was introduced between Ubuntu 9.10 and 10.04 (i.e. between
> Linux 2.6.31 and 2.6.32).
> > and
> > https://bugs.launchpad.net/linux/+bug/218094
> That bug report is specifically about the msi-laptop driver, and was
> made in 2008.
> Ben Hutchings
> Once a job is fouled up, anything done to improve it makes it worse.
Zentrum für Angewandte Geologie
Imagine there's no countries
it isn't hard to do
Nothing to kill or die for
And no religion too
Imagine all the people
Living life in peace