[Cialug] Linux on Lenovo Laptop - Battery Issue

[chris rheinherren]

I looked in the BIOS and didnt see any battery settings there to change the
charging thresholds.

On Tue, Sep 12, 2017 at 9:37 AM, David Champion <dchamp1337 at gmail.com>
wrote:

> Maybe check the bios? But my guess is it is set in the battery.
>
> -dc
>
> On Sep 12, 2017 9:31 AM, "chris rheinherren" <c.rheinherren at gmail.com>
> wrote:
>
> > I have a perlexing issue. I had a Windows 8.1 Lenovo laptop. It was out
> of
> > warrenty so I decided to wipe it and install Ubuntu (17.04) on it.
> >
> > Since this laptop was plugged into AC power most of the time when it ran
> > Windows, Lenovo had a Power Management Utility to keep the battery
> charged
> > to 60% instead of 100% to preserve the battery life to some degree.
> >
> > I didn't think anything about this utility when I wiped the system
> thinking
> > that those settings would be wiped along with everything else that was
> > Windows.
> >
> > However, once the system came back up with Ubuntu. The battery shows at
> > 59.9% of a full charge. If I take it off AC and use the battery and then
> > put it back on AC the charging stops at the 59.9% level again. So it
> seems
> > that the settings survived the complete install wipe.
> >
> > I've done some looking around and it appears that Lenovo has some Linux
> > battery utilities to change the charging thresholds for their ThinkPad
> > models but not for the regular Lenovo line. From what I can find on the
> > 'net. The Windows power utility writes the threshold information to the
> > battery chip itself. So even shutting down the computer and removing the
> > battery doesn't reset the battery.
> >
> > I've posted to the Lenovo forum for help on this and to the Ubuntu forums
> > as well. But gonna check here to see if anyone has any other ideas. I
> don't
> > really want to reinstall Windows. I do have a backup of the system on an
> > external USB harddrive but I wasn't able to boot from that backup either
> > and I don't have a Windows 8.1 disc at all.
> >
> > If nothing else works I might just replace the battery.
> >
> >
> > Thanks
> > Chris
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