I have a problem with Wi-Fi. I thought it was due to opening a second version of Dropbox, but I was wrong in my expectation that the problem would be solved. I reinstalled the Wi-Fi definition again. The commands I used are: sudo apt update && sudo apt upgrade
sudo apt install --reinstall firmware-iwlwifi
sudo modprobe -r iwlwifi
sudo modprobe iwlwifi
sudo nano /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
[connection]
wifi.powersave = 2
sudo systemctl restart NetworkManager
sudo nano /etc/sysctl.conf
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
sudo sysctl -p
sudo systemctl restart NetworkManager
I restarted the system and the Wi-Fi returned to work for a short time, then it stopped