Power Management and WiFi Issues

Support and Help
,
22

It is part of the Ubuntu 24.04 Power Mode. You have 3 modes, performance/blalance and power save.

23

Friends, I tried all the solutions that you recommended in Debian, Linux Mint and Ubuntu (Ubuntu being my prefered OS). I downloaded them all and installed them on an internal hard drive (not a VM). I updated them all just to make sure I had the most current versions. The same issues that I experienced with Ubuntu 24.04 and 25.04 happened. I tried diffrent test on my network with a MacBook as well as with a windows 11 computer and there were no issues at all with the wifi speed even in power save mode. I do not know if the situation will be fixed on the next Ubuntu but what I experience so far is not (as far as I am concerned) fixable with the solutions that were proposed. I spent tremendous hours downloading, testing and the result was mediocre. If you think of something else please let me know. Thanks to all.

24

What is the result for ls /etc/NetworkManager/conf.d/

25

99-no-wifi-powersave.conf default-wifi-powersave-on.conf

26

In terminal sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf then reboot

27

It returned : “sed: no input files”

28

Results for cat /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

29

[connection]
wifi.powersave = 2

30

This is the correct answer. I had to do the same on Kinoite today and haven’t had an issue since. Before my wifi speed would drop and randomly the card would just disappear.

31

Good moring friends. I tried something else this morning. I did a clean install of ubuntu 24.04 using the ethernet connection instead of the wifi. After the install and round of updates I disconnected the ethernet cable and went wifi. I modified the power saving NetworkManager to 2, reboot the laptop and so far so good. I followed these steps based on some researches I did last night on the internet. I will keep you posted.

32

Well the wifi speed droped again. The option to do a clean install using the ethernet option works for a while and then the wifi is acting up again. At leat I tried.

33

Thanks for this one!
I’m using Gnome 48 & a newly minted Trixie on a T495 ThinkPad
I tried creating a file in the NM config
and caused NM to keel over completely.
I followed your suggestions and it was seamless.
nmcli is certainly a useful and powerful command!