[Cialug] Linux on Lenovo Laptop - Battery Issue

[David Champion]

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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