Comment # 6 on bug 1229999 from Sebastian Turzański

Hi @takashi(In reply to Takashi Iwai from comment #4)
> Have you tried adjusting via powertop --auto ?

Hi Takashi

I remember having one bug report related to this topic. 
I was showing comparison between clean ubuntu and clean tumbleweed intall with
ubuntu using 3-4 times less power in idle state. I think I was not convincing
enough but now it is another person with another hardware stating the same.

I tried to switch from power-profiles-daemon to TLP and results are very
promising. I will add them below. Still a strange thing is that ubuntu uses PPD
instead of TLP anyway...

Hi , I did some testing , my setup is:
• XP9700 with 4k display , dual NVME
• brightness set to 20%
• wifi on and connected, BT on and connected to mouse
• OpenSuse Tumbleweed with latest updates and 6.7.5 kernel
• KDE plasma 5.27.10 on Wayland and a number of autostart apps
• I did restart before each test both for PowerProfilesDaemon (PPD) and TLP.

PPD : in power-saving mode using KDE was a pain I experienced 1-2 seconds gui
freezes, plasma animation stutters and I can literately feel system was
extremely slow , still power consumption/discharge rate was huge on performance
mode I the experience was OK but with a lot of heat forcing the fan to go crazy
or if I forced thermal mode to quiet my laptop would burn my hands.

TLP: all works smooth, no option to change modes in KDE plasma integration on
power connect/disconnect events but it seams TLP is clever enough so no manual
settings are required.

Measurements: See the graph where I marked PPD with yellow and TLP with green.

Conclusions : I changed to PPD some time ago when I discovered Alex’s
Dell-power-manager app that supported it well, then I discovered PPD had nice
integration with KDE plasma that allowed me (in gui) to set profile changes to
power-saving when AC was disconnected.
Now after comparing the data and the experiences I am reverting back to TLP and
I recommend the same.

See the graph attached.