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#1 2022-11-11 06:48:44

raykeyid
Member
Registered: 2022-10-24
Posts: 2

Battery performace Issue

Hi , I am facing a strange issue on my laptop. I replaced my laptop battery just 20 days ago because my previous battery life cycle went down to 17% . My laptop is fairly new just 2.5 years old.
battery has been changed  because first  8-10 months it ran on windows and on a HDD , later after change to linux i switch to ssd with high capacity new 8 gb ram fitted on top of it.
but still with the setup with 12 Gb  ram and ssd , only lite programming no media at all lasts my battery only 1.30 hrs max. whether on windows got 4 + hours with heavy multitasking. why?.
the new battery is from real OEM.

I have  formatted my ssd and reinstalled arch with no additional software but no improvement. why?
CPU = AMD Ryzen 2500U.
Manufacture =  Asus
RAM = 12GB
No extra GPU only built in
battery new = 20 days old
Desktop  Environment = KDE plasma latest.

Linux specially bare Arch Linux has to took less power, then why this issue?
can you please help me?

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#2 2022-11-11 13:18:55

Awebb
Member
Registered: 2010-05-06
Posts: 6,048

Re: Battery performace Issue

Read the whole Ryzen article: https://wiki.archlinux.org/title/Ryzen, especially the microcode part.

Powermanagement under Archlinux is described under https://wiki.archlinux.org/title/Power_management.

Check this, too: https://wiki.archlinux.org/title/TLP

As well as this: https://wiki.archlinux.org/title/CPU_frequency_scaling

Last edited by Awebb (2022-11-11 13:21:26)

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#3 2022-11-12 05:46:46

raykeyid
Member
Registered: 2022-10-24
Posts: 2

Re: Battery performace Issue

https://aur.archlinux.org/packages/auto-cpufreq
I am going to apply this because TLP method does not help a lot
and I need some automatic management behind the stuffs.

anyway thanks for the help.
to be noted all of the other mentioned settings I have done anyway or installed anyway form the first

Last edited by raykeyid (2022-11-12 05:48:35)

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#4 2022-11-12 06:51:30

BabyGuinan
Member
Registered: 2022-11-11
Posts: 1

Re: Battery performace Issue

In my experience you can't get to the point of idle(!)-power-consumption as Windows (at least with mobile AMD hardware).
Especially your Zen1 may have disabled mwait-instructions* by the firmware and the Vega still got no gfxoff-support by default (AFAIK).
Also the violation of standard-acpi-implementation by the firmware may cause higher power-consumptions.

So IMO 10-15w idle is the best you'll get (whatever "lite programming" really means).

*In that case, "idle=halt" via grub-cmdline saved some watts for me.

raykeyid wrote:

Linux specially bare Arch Linux has to took less power, then why this issue?

CPU-utilization != active+working support for power-saving-functionallity

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