Connected to Network but no Internet | Ubuntu 22.04 LTS | Rock Pi 4 SE

#1

Hi, I have just installed ‘Ubuntu 22.04 LTS (GNU/Linux 5.10.110-18-rockchip aarch64)’ on Rock Pi 4 SE.

I am trying to connect to the internet.

I am connected to WIFI ( nmcli d state is connected, I can ping router, I also ssh to rock pi wirelessly) but I cannot connect to Internet ( cannot ping google, sudo apt-get update fails ).

At first, the nmcli d would return status ‘unmanaged’. I fixed it by going to /etc/NetworkManager/NetworkManager.conf and changing this; wifi.scan-rand-mac-address=no to wifi.scan-rand-mac-address=yes.

After that I was able to connect to network, but not to internet.

I am not sure if it is connected to my issue but I found a post that mentions ‘The file /etc/network/interfaces has been replaced as of Ubuntu 17.10 with netplan’ https://askubuntu.com/questions/1249398/connected-to-wifi-but-no-internet-ubuntu-18-04#comment2109327_1249420
But I do not have /etc/netplan directory at all.

Some outputs;

rock@rock-4se:/etc$ nmcli d
DEVICE         TYPE      STATE         CONNECTION
eth0           ethernet  connected     Wired connection 1
wlan0          wifi      connected     KaczuszkaNet2G
p2p-dev-wlan0  wifi-p2p  disconnected  --
lo             loopback  unmanaged     --

sudo service network-manager  status

rock@rock-4se:/etc$ sudo service systemd-networkd status
● systemd-networkd.service - Network Configuration
     Loaded: loaded (/lib/systemd/system/systemd-networkd.service; enabled; vendor preset: enabled)
     Active: active (running) since Mon 2023-08-21 21:11:42 UTC; 2 months 17 days ago
TriggeredBy: ● systemd-networkd.socket
       Docs: man:systemd-networkd.service(8)
   Main PID: 303 (systemd-network)
     Status: "Processing requests..."
      Tasks: 1 (limit: 4602)
     Memory: 2.5M
        CPU: 465ms
     CGroup: /system.slice/systemd-networkd.service
             └─303 /lib/systemd/systemd-networkd

Nov 08 10:48:10 rock-4se systemd-networkd[303]: eth0: Lost carrier
Nov 08 10:48:13 rock-4se systemd-networkd[303]: eth0: Gained carrier
Nov 08 12:12:31 rock-4se systemd-networkd[303]: eth0: Lost carrier
Nov 08 12:12:33 rock-4se systemd-networkd[303]: eth0: Gained carrier
Nov 08 12:12:35 rock-4se systemd-networkd[303]: eth0: Lost carrier
Nov 08 12:32:49 rock-4se systemd-networkd[303]: eth0: Gained carrier
Nov 08 12:32:52 rock-4se systemd-networkd[303]: eth0: Lost carrier
Nov 08 12:32:55 rock-4se systemd-networkd[303]: eth0: Gained carrier
Nov 08 12:32:56 rock-4se systemd-networkd[303]: eth0: Lost carrier
Nov 08 12:32:59 rock-4se systemd-networkd[303]: eth0: Gained carrier


rock@rock-4se:/etc$ sudo NetworkManager --print-config
# NetworkManager configuration: /etc/NetworkManager/NetworkManager.conf (lib: 10-disable-wifi-scan-rand-macaddr.conf, no-mac-addr-change.conf) (etc: 10-dns-resolved.conf, 10-globally-managed-devices.conf, default-wifi-powersave-on.conf)

[main]
# rc-manager=
# auth-polkit=true
# dhcp=internal
# iwd-config-path=
plugins=ifupdown,keyfile
no-auto-default=*
configure-and-quit=no

[ifupdown]
managed=false

[logging]
# backend=journal
# audit=true

[device]
# wifi.backend=wpa_supplicant
wifi.scan-rand-mac-address=yes

[device]
# wifi.backend=wpa_supplicant
wifi.scan-rand-mac-address=yes

[device-31-mac-addr-change]
match-device=driver:eagle_sdio,driver:wl
wifi.scan-rand-mac-address=no

[connection]
wifi.powersave=3

rock@rock-4se:/etc$ ip a
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
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether be:68:8c:08:b8:50 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.101/24 brd 192.168.1.255 scope global noprefixroute eth0
       valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 50:5a:65:af:da:91 brd ff:ff:ff:ff:ff:ff
    inet 192.168.50.27/24 brd 192.168.50.255 scope global dynamic noprefixroute wlan0
       valid_lft 76204sec preferred_lft 76204sec
    inet6 fe80::af20:5c68:8838:32b6/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
	   

rock@rock-4se:/etc$ ip neigh
192.168.1.1 dev eth0  FAILED
192.168.1.69 dev eth0 lladdr 10:65:30:1f:93:53 REACHABLE
192.168.50.1 dev wlan0 lladdr 50:eb:f6:84:bd:48 STALE

I found a tip thast i should go to resolv.conf and change

Generated by NetworkManager

nameserver 192.168.50.1

to

Generated by NetworkManager

nameserver 8.8.8.8
nameserver 8.8.4.4

but it did not help.

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