Laptop draining quickly on ubuntu 18?

Question

linux

I bought a couple of days ago xiaomi air 13 i5/8250u, mx150. The charge holds for about two hours, for watching an online movie (an hour and a half) at full brightness it took 80%. In general, the battery is melting before our eyes .. I found on the Internet that there are problems with power management in ubuntu. Are there any solutions to this problem? Has anyone experienced this?

Answer 1

link1 , link2

Answer 2

Curve support for ACPI and power saving. Google, there are methods to lower the frequency of the processor, but they help only a little.

Answer 3

And on Windows with all the firewood at the same load, how much?
In general, if the support is not declared by the manufacturer, and therefore there is no firewood from it, the laptop lives less under the line.
From universal councils - tlp.
And then dig, consult and dig.