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The only WIFI network I'm able to use is 5G WPA EAP. The Pi 4 it will connect to an access point, but on it's own it doesn't connect to the internet. When I ping www.google.com I get Temporary failure in name resolution. When I check status bar on VNC, the Wifi fan symbol just keeps on disconnecting and reconnecting.

Here is the confusing part: If I plug in my Wireless-G USB Adapter though, the Wifi suddenly works just fine. Strangley, if I also have the ethernet connected, the Wifi slowly but eventually connects after many attempts.

Here is what iwconfig shows when the USB Adapter plugged in, wlan0 looks exactly the same on iwconfig, whether or not I have internet access:

wlx000e3b09eb71  IEEE 802.11  ESSID:"XXX"
          Mode:Managed  Frequency:2.447 GHz  Access Point: 07:2F:E1:G8:6E:46
          Bit Rate=54 Mb/s   Tx-Power=13 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=48/70  Signal level=-62 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:25   Missed beacon:0

usb0      no wireless extensions.

lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11  ESSID:"XXX"
          Mode:Managed  Frequency:5.785 GHz  Access Point: A0:15:4A:18:2D:E4
          Bit Rate=12 Mb/s   Tx-Power=31 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=56/70  Signal level=-54 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

I've tried turning the wlan0 power management on and off, that doesn't help.

Is something wrong with the Pi's built-in wifi?

Additional info as requested:

$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
    link/ether gc:b5:31:a4:20:76 brd ff:ff:ff:ff:ff:ff
3: usb0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000
    link/ether 25:63:f3:22:16:8d brd ff:ff:ff:ff:ff:ff
    inet 10.55.0.1/29 brd 10.55.0.7 scope global usb0
       valid_lft forever preferred_lft forever
4: wlx000e3b09eb71: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:2f:2v:47:vs:41 brd ff:ff:ff:ff:ff:ff
    inet 17X.XX.XXX.XXX/20 brd 17X.XX.XXX.255 scope global dynamic noprefixroute wlx000e3b09eb71
       valid_lft 73829sec preferred_lft 63029sec
    inet6 be24::2s9f:8615:rs25:1e0g/64 scope link
       valid_lft forever preferred_lft forever
5: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether dc:a3:12:b3:99:29 brd ff:ff:ff:ff:ff:ff
    inet 16X.XXX.XXX.XXX/16 brd 16X.XXX.255.255 scope global noprefixroute wlan0
       valid_lft forever preferred_lft forever
    inet6 fe80::a2f0:dd4d:e5fd:b10e/64 scope link
       valid_lft forever preferred_lft forever

$ ip route
default via 17X.XX.XXX.X dev wlx000e3b09eb71 proto dhcp src 17X.XX.XXX.XXX metric 304
10.55.0.0/29 dev usb0 proto kernel scope link src 10.55.0.1 linkdown
16X.XXX.X.X/16 dev wlan0 scope link src 169.XXX.XXX.XXX metric 305
17X.XX.XXX.X/20 dev wlx000e3b09eb71 proto dhcp scope link src 17X.XX.XXX.XXX metric 304
  • 1
    wlx000e3b09eb71 and wlan0 are connected to different access points with different frequency. Can you please add the contents of /etc/wpa_supplicant/wpa_supplicant.conf and output from ip addr and ip route to the question? – Ingo Oct 24 at 21:43

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