On Mon, Dec 19, 2022 at 8:54 AM B.M. <[email protected]> wrote: > Hi, > > I've got a brand new Dell Precision 3570 Laptop with Ubuntu 20.04 LTS pre- > installed. After figuring out recovery partition and tools, I installed > Debian > Testing (Bookworm) side-by-side (since using a live medium doesn't really > work > because it's based on Stable which isn't supporting the keyboard/touchpad > well > yet). > > Based on powertop the energy consumption of Ubuntu after booting, in a > Gnome > one Wayland-session, running nothing but a terminal, is about 2.79 - 3.37 > Watts, with an average of 3.08 W (over 15 measurements in a row). > > In Debian Testing (Bookworm), also Gnome on Wayland, fresh boot, terminal > running powertop, I get about 5.0 Watts, so ~60% higher. This after > installing > tlp (has been installed in Ubuntu) - before it has been around 8 - 10 W. > > On Debian I also compared the output of tlp-stat; I could align some > settings > afterwards (I added tlp config files and added some boot parameters: > workqueue.power_efficient=1, i915.i915_enable_fbc=1 and > i915.i915_enable_dc=1). > To me, there doesn't seem to be much difference anymore, but the higher > power > consumption remains. (There's only a SSD inside, no spinning discs, and > screen > brightness is set to the minimum in both cases. Bluetooth is deactivated in > Gnome settings.) > Measuring in TTY on Debian, after logout of the Gnome session, I get 4.9 W > as > well. > > Any ideas what I could do to get Debian to be as power efficient as Ubuntu? >
Check the speed of your CPU's. It could be that Ubuntu was running at a slower speed than Debian. More speed, more watts used. > Thank you very much. > > Best, > Bernd > -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system ⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org/ ⠈⠳⣄⠀⠀
