Internet access troubleshooting

General system Newbie
1

Hi,

I’m having some weird internet issue and I don’t know how to troubleshoot it.
Zoom the video call software works, meaning it has access to internet.
But firefox and chromium can’t access internet.
But if I run a vpn, then all have access to internet.

Internet stopped working without warning. I’d like to have internet without having to use a vpn.

System:
  Kernel: 6.6.72-1-lts arch: x86_64 bits: 64 compiler: gcc v: 14.2.1
  Desktop: i3 v: 4.24 dm: LightDM Distro: EndeavourOS base: Arch Linux
Network:
  Device-1: Intel Ethernet I219-V vendor: ASRock driver: e1000e v: kernel
    port: N/A bus-ID: 00:1f.6 chip-ID: 8086:0d4d
  IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full mac: <filter>
  IF-ID-1: docker0 state: down mac: <filter>
  IF-ID-2: ipv6leakintrf0 state: unknown speed: N/A duplex: N/A
    mac: <filter>
  IF-ID-3: tun0 state: unknown speed: 10000 Mbps duplex: full mac: N/A
Bluetooth:
  Device-1: Realtek Bluetooth Radio driver: btusb v: 0.8 type: USB rev: 1.1
    speed: 12 Mb/s lanes: 1 bus-ID: 1-2.3.1:8 chip-ID: 0bda:2550
  Report: btmgmt ID: hci0 rfk-id: 0 state: up address: <filter> bt-v: 5.1
    lmp-v: 10
Info:
  Memory: total: 16 GiB available: 15.49 GiB used: 6.61 GiB (42.7%)
  Processes: 401 Power: uptime: 55m wakeups: 0 Init: systemd v: 257
    default: graphical
  Packages: 1412 pm: pacman pkgs: 1406 pm: flatpak pkgs: 6 Compilers:
    clang: 19.1.7 gcc: 14.2.1 Shell: Zsh v: 5.9 running-in: xfce4-terminal
    inxi: 3.3.37

What could be the problem and how could I troubleshoot it?

2

In the terminal, what does ping google.com give out, with and without a VPN?

1 Like
3

It would also help out if we knew your hardware: inxi -Fxxc0z | eos-sendlog

4

with vpn I get:

PING google.com (142.251.39.110) 56(84) bytes of data.
64 bytes from ams15s48-in-f14.1e100.net (142.251.39.110): icmp_seq=1 ttl=119 time=33.8 ms
64 bytes from ams15s48-in-f14.1e100.net (142.251.39.110): icmp_seq=2 ttl=119 time=38.5 ms
64 bytes from ams15s48-in-f14.1e100.net (142.251.39.110): icmp_seq=3 ttl=119 time=34.6 ms

without vpn (meaning no internet connection with firefox or chromium even though Zoom works fine)

~ > ping google.com                                                                                                                                       12:25:34
ping: google.com: Temporary failure in name resolution
5

Looks like your DNS server settings are incorrect/hosed (that’s one possibility and probably the most likely).
Though we can’t be sure that your unvpn’d connection is working at all…keep digging.

2 Likes
6

if the DNS settings are incorret, would it affect Zoom as well?
because even though without VPN, Zoom keeps streaming the video call.

But yea, I thought DNS was also a problem. In my router I have cloudflare DNS set up. I tried removing it and use instead my ISP’s DNS server. But that didn’t work.

7

ok, so weird. I have an option on the modem/router in the section of DNS over TLS to activate a fallback to non-encrypted DNS traffic if all encrypted servers fail.

I just activated it and deactivated and now all works.

8

Yeah, fits the ‘reboot it’ strategy and one that I always follow when internet access is curtailed. That would have probably worked too :0

9

Yes, enbabling and disabling networking also works. I have to do that after my cable modem loses the connection and then reconnects.

10

This topic was automatically closed 2 days after the last reply. New replies are no longer allowed.