I am stacked with a network problem since a few days ago. Everything was working just fine when I rebooted my laptop. During the rebooting process it stacked saying “a stop job is running” mentioning something about “watchdog” (sorry, I don’t remember exactly and I don’t have any screenshot of that). The point is that I was in rush, and I forced the shut down by pressing the power button. When I restarted the laptop, both wifi and ethernet connections were connected (looking at network settings) but I have no internet access.
Looking for solutions on internet many suggested to check the DNS configurations. Actually when I checked the /etc/resolv.conf the nameserver was badly configured:
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# Generated by NetworkManager
nameserver ::1
I managed to avoid this behavior on reboot by doing the following after editing the resolv.conf:
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sudo chattr +i /etc/resolv.conf
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# Generated by NetworkManager
nameserver 8:8:8:8
nameserver 8:8:4:4
I can ping other devices in my network.
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guido@guido-debian:~$ ping 138.4.46.22
PING 138.4.46.22 (138.4.46.22) 56(84) bytes of data.
64 bytes from 138.4.46.22: icmp_seq=1 ttl=128 time=2.00 ms
64 bytes from 138.4.46.22: icmp_seq=2 ttl=128 time=1.77 ms
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guido@guido-debian:~$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=112 time=2.59 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=112 time=1.62 ms
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guido@guido-debian:~$ ping google.com
ping: google.com: Name or service not known
guido@guido-debian:~$ ping facebook.com
ping: facebook.com: Name or service not known
All the previous happens regardless I am using wifi or ethernet connection.
I have dual boot with Windows 10, everything works smoothly on windows.
I don’t know what to do, I red several threads about this on internet but either they didn’t solve my problem or they were too advanced and hardware specific (I am newby, it is difficult for me to adapt complex solutions).
Another thing I noticed is that I had a VPN configured to connect to my working network. It disappeared from network setting. I recently installed ProtonVPN and now the only VPN on my network setting is ProtonVPN. I could not say if the work VPN disappeared when the internet issue began or when I installed ProtonVPN. However I tried to uninstall ProtonVPN. Nothing change, and I can still see ProtonVPN in my network setting even if I cannot see it in installed packages/programs.
Any help or suggestion is appreciated.
Debian 10 buster, Kernel 4.19.0-22-amd64.
Thanks in advance…
Guido