[sf-lug] battery life on laptops OK?

Bobbie Sellers bliss-sf4ever at dslextreme.com
Mon Dec 13 09:49:35 PST 2021

On 12/12/21 18:54, Rick Moen wrote:
> Quoting Bobbie Sellers (bliss-sf4ever at dslextreme.com):
>> Hi LUGers,
>> Well if your battery life is not ok you might want to look around for
>> the TLP packages.  According to my information it is a superior tool
>> for extending laptop battery life.  This was just added to the
>> PCLinuxOS repositories at the request of a user/forum member.
> _Merely_ adding the TLP power-management utility might not have the
> benefit you're suggesting -- unless the admin also adjusts the charge
> thresholds in /etc/default/tlp . (I see claims that TLP's defaults are
> good, but it's worth checking.) Something like 40% charge as the start
> threshold an 60% as the stop threshold will give you the optimal battery
> life -- but, of course, at some cost to battery-based runtimes.
> https://unix.stackexchange.com/questions/48534/how-to-adjust-charging-thresholds-of-laptop-battery
> https://superuser.com/questions/502328/how-does-limiting-a-laptop-batterys-full-charge-to-less-than-100-extend-its-ba
> https://en.wikipedia.org/wiki/Lithium-ion_battery#Lifespan
> TLP's upstream maintainer's site is here, and has good docs:
> https://linrunner.de/tlp/
> Most common distros already had TLP in their package collections.
> Be aware that TLP will probably conflict with other power management
> suites, i.e., you can have only one at a time.
>> It has requires the invidious systemd to work previously but one of
>> our Brazilian users and packagers figured out a way around this silly
>> requirement.
> Er, there is/was no such dependency. Check for yourself:
> https://linrunner.de/tlp/developers/dependencies.html
> https://linrunner.de/tlp/developers/architecture.html
> To be sure, TLP does require monitoring and acting on kernel events, but
> that's not the same as requiring systemd.

     The following quoted material why people assume it required systemd.
> Code: [Select]
> |------------------ Running auto-cpufreq daemon install script 
> ------------------ * Unsupported init system detected, could not 
> install the daemon * Please open an issue on 
> https://github.com/AdnanHodzic/auto-cpufreq |
> Probably wants to install a systemd daemon

         That is the only reason that I said it, required in the past

     Happy Holidays to all.

     Bobbie Sellers

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