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I have just upgraded from Ubuntu 22.04 to 24.04 and the wifi stopped working, displaying a question mark on the wifi icon. Same happens with Ethernet cable, same happens with alternative usb stick wifi.

This solution didn't help. Here are some symptoms:

$ nmcli general status
STATE                 CONNECTIVTY WIFI-HW   WIFI    WWHAN-HW WWAN
connected (site only) limited     enabled   enabled missing  enabled

$ iwconfig
lo        no wireless extensions.
enxe4b97ac9c1f4  no wireless extensions.
wlp2s0    IEEE 802.11 ESSID: "CAMERBOX_5GHz"
          Mode:Managed Frequency5.18 GHz Access Point: 3C: (etc.)
          Bit Rate=263.3 Mb/s   Tx-Power=23 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=39/70  Signal level=-71 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0

          Tx excessive retries:0  INvalid misc:60   Missed beacon:0


$ sudo dmesg | grep iwl
  [    17.500387] warning: 'iwlist' uses wireless extensions which will stop working for wifi 7 hardware   use nl80211
David DE
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1 Answers1

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See if wifi power management is crashing networking by disabling it,in terminal

sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
sudo iwconfig wlp2s0 power off

WWAN-HW isn't relavent because that is for cellular devices

Jeremy31
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