Edit: I can access the internet just fine via the same wireless network using other devices
Other solutions I have tried to no avail
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I am running 20.04 on a desktop with an external WiFi dongle. Following an update last week it appears something related to Network Manager broke. Prior to this update I could access the internet just fine with all the programs I normally use (apt, Firefox, Steam, Telegram and Signal desktop clients, etc) worked just fine. Post update it appeared that, while I could connect to the local WiFi, no program could actually access the internet. Later, by pure chance, I noticed that my Telegram client actually did connect to the internet at sporadic intervals, but no other program could do so. After some experimenting I realized that I could activate my ProtonVPN client, and with it active, all programs could now access the internet. Moreover, if I turn the VPN off I can staay in Discord calls for an additional ~10s before I lose the connection, but Firefox stops working immediately.
I have tried pinging my router, and that goes through just fine both with and without the VPN active, but only when I am connected to the VPN can I ping something external (e.g. www.google.com). This lead me to believe that the problem is not with any drivers.
After consulting various help guides I started suspecting the the problem lies with NetworkManager and I after trying a quick reinstall I decided to have a look at the config file from /etc/netplan/01-network-manager-all.yaml which appears to be rather empty(which may or may not be how it is supposed to be; content below).
nik@Bahamut:~$ cat /etc/netplan/01-network-manager-all.yaml
# Let NetworkManager manage all devices on this system
network:
version: 2
renderer: NetworkManager
After some more googling and the help of a friend I came up with a different config that took the control from NetworkManager and handed it to networkd instead (below)
nik@Bahamut:~$ cat /etc/netplan/01-netcfg.yaml
network:
version: 2
renderer: networkd
wifis:
wlx288088fc7609:
dhcp4: yes
dhcp6: yes
access-points:
"WifiName":
password: *****
Changing the config file to the above, and following with
sudo netplan generate
reboot
Provides a partial fix. I can now access the internet with all programs except the VPN client that I rely on for work (FortiClient) and Proton, which fail to establish a connection. Before the change to the netplan config file Forticlient could only establish a connection if I first connect with Proton, but after the change neither works. Moreover, the change means I can no longer detect other networks. Unfortunately I have had no success adding this additional info to the original config file.
I have not voluntarily assigned a static IP to my machine, and for your consideration I temporarily disconnected my VPN to include some information that is often requested with these issues.
IPV4 Method: Automatic(DHCP),
DNS: Automatic On (have also tried with this off and DNS set to 8.8.8.8)
nik@Bahamut:~$ ifconfig
enp3s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 3c:7c:3f:ee:ca:e6 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device memory 0xfc600000-fc61ffff
ipv6leakintrf0: flags=195<UP,BROADCAST,RUNNING,NOARP> mtu 1500
inet6 fe80::e2f8:fceb:167a:510b prefixlen 64 scopeid 0x20<link>
inet6 fdeb:446c:912d:8da:: prefixlen 64 scopeid 0x0<global>
ether d2:ff:39:b1:7a:e5 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3512 bytes 506916 (506.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 29381 bytes 2269898 (2.2 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 29381 bytes 2269898 (2.2 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:cd:bc:f7 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlx288088fc7609: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.21 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 2001:1713:ea78:1550:773:6762:21e3:86b0 prefixlen 64 scopeid 0x0<global>
inet6 fe80::d353:1784:94c0:45a2 prefixlen 64 scopeid 0x20<link>
inet6 2001:1713:ea78:1550:1158:6bf7:d17c:7159 prefixlen 128 scopeid 0x0<global>
inet6 2001:1713:ea78:1550:ebe:ac4d:5487:c5da prefixlen 64 scopeid 0x0<global>
inet6 fdaa:bbcc:ddee:0:9850:84:44f2:c07c prefixlen 64 scopeid 0x0<global>
inet6 fdaa:bbcc:ddee:0:9557:a838:1dcd:b4c6 prefixlen 64 scopeid 0x0<global>
ether 28:80:88:fc:76:09 txqueuelen 1000 (Ethernet)
RX packets 3853331 bytes 4698645803 (4.6 GB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2672020 bytes 463156092 (463.1 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Thanks in advance
