Hello,
I have had similar issue in Kubuntu 20.04, laptop HP Probook 4340s. Not
so many CTRL-EVENT-SIGNAL-CHANGE messages, but regular disconnection
from wi-fi a few minutes after system start followed by an endless loop
of connecting and disconnecting to/from the wi-fi. This rendered the
wi-fi connection useless and the only solution had been a system
restart. In addition, the problem had been occurring on some wi-fi-s only!
What seems to have solved my problem is the advice in
https://ubuntuforums.org/showthread.php?t=2011191
namely setting power management to off permanently by:
/ . gksudo gedit /etc/pm/power.d/wireless/
(this will create or edit a configuration file that will override the
default power management behavior) and
. enter the following:
/#!/bin/sh //
///sbin/iwconfig wlan0 power off //
/above /exit0/,
(in my case the file was new, i.e. empty)
. then save gedit, close and reboot.
So far, no more problems.
Good luck!
Michal
