I have not been able to access the internet for a few days, only through the Tor browser. I guess it is a DNS problem. I also suspect this could have something to do with my VPN (Proton). I had this problem already 2 months ago and I had to reinstall Ubuntu as i could not find the answer to my problem.
I run Ubuntu 22.04 over a thinkpad laptop
Also worth mentioning, I have installed a FreedomBox (small home server) 10 days ago but everything was working fine so after.
I copied several commands I have tried or that were recommended in related posts. It didn't help me so far / I couldn't take advantage of the results myself
thanks Emma
Commands:
sudo apt update
sudo apt upgrade
ls -l /etc/resolv.conf
cat /etc/resolv.conf
resolvectl status
ping 8.8.8.8
ping google.com
Results:
~$ sudo apt update
Ign:1 http://de.archive.ubuntu.com/ubuntu jammy InRelease
Ign:2 http://security.ubuntu.com/ubuntu jammy-security InRelease
(...)
0% [Connecting to security.ubuntu.com] [Connecting to ppa.launchpadcontent.net]^Err:2 http://security.ubuntu.com/ubuntu jammy-security InRelease
Temporary failure resolving 'security.ubuntu.com'
Err:5 https://ppa.launchpadcontent.net/micahflee/ppa/ubuntu jammy InRelease
Temporary failure resolving 'ppa.launchpadcontent.net'
Err:4 https://updates.signal.org/desktop/apt xenial InRelease
Temporary failure resolving 'updates.signal.org'
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
59 packages can be upgraded. Run 'apt list --upgradable' to see them.
W: Failed to fetch http://de.archive.ubuntu.com/ubuntu/dists/jammy/InRelease Temporary failure resolving 'de.archive.ubuntu.com'
(...)
xxx@xxx:~$ sudo apt upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
chromium-codecs-ffmpeg-extra gstreamer1.0-vaapi libflashrom1 libftdi1-2
libgstreamer-plugins-bad1.0-0 libva-wayland2
Use 'sudo apt autoremove' to remove them.
The following packages have been kept back:
libfprint-2-2 libglib2.0-0 libglib2.0-bin libglib2.0-data
The following packages will be upgraded:
apport apport-gtk firmware-sof-signed fonts-opensymbol gir1.2-gdkpixbuf-2.0
gir1.2-gnomedesktop-3.0 gnome-desktop3-data libgdk-pixbuf-2.0-0
libgdk-pixbuf2.0-bin libgdk-pixbuf2.0-common libgnome-bg-4-1
libgnome-desktop-3-19 libgnome-desktop-4-1 libnetplan0 libreoffice-base-core
libreoffice-calc libreoffice-common libreoffice-core libreoffice-draw
libreoffice-gnome libreoffice-gtk3 libreoffice-help-common
libreoffice-help-de libreoffice-help-en-gb libreoffice-help-en-us
libreoffice-help-fr libreoffice-impress libreoffice-l10n-de
libreoffice-l10n-en-gb libreoffice-l10n-en-za libreoffice-l10n-fr
libreoffice-math libreoffice-ogltrans libreoffice-pdfimport
libreoffice-style-breeze libreoffice-style-colibre
libreoffice-style-elementary libreoffice-style-yaru libreoffice-writer
libuno-cppu3 libuno-cppuhelpergcc3-3 libuno-purpenvhelpergcc3-3 libuno-sal3
libuno-salhelpergcc3-3 linux-firmware netplan.io openvpn python3-apport
python3-problem-report python3-uno rsync signal-desktop
ubuntu-advantage-tools uno-libs-private ure
55 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.
Need to get 492 MB of archives.
After this operation, 8.478 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Ign:1 http://de.archive.ubuntu.com/ubuntu jammy-updates/main amd64 rsync amd64 3.2.3-8ubuntu3.1
Ign:2 https://updates.signal.org/desktop/apt xenial/main amd64 signal-desktop amd64 6.0.0
(...)
xxx@xxx:~$ ls -l /etc/resolv.conf
lrwxrwxrwx 1 root root 39 Okt 25 16:34 /etc/resolv.conf -> ../run/systemd/resolve/stub-resolv.conf
xxx@xxx:~$ cat /etc/resolv.conf
# This is /run/systemd/resolve/stub-resolv.conf managed by man:systemd-resolved(8).
# Do not edit.
#
# This file might be symlinked as /etc/resolv.conf. If you're looking at
# /etc/resolv.conf and seeing this text, you have followed the symlink.
#
# This is a dynamic resolv.conf file for connecting local clients to the
# internal DNS stub resolver of systemd-resolved. This file lists all
# configured search domains.
#
# Run "resolvectl status" to see details about the uplink DNS servers
# currently in use.
#
# Third party programs should typically not access this file directly, but only
# through the symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a
# different way, replace this symlink by a static file or a different symlink.
#
# See man:systemd-resolved.service(8) for details about the supported modes of
# operation for /etc/resolv.conf.
nameserver xxx.0.xxx.53
options edns0 trust-ad
search .
xxx@xxx:~$ resolvectl status
Global
Protocols: -LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
resolv.conf mode: stub
Link 2 (enp0s25)
Current Scopes: none
Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
Link 3 (wlp3s0)
Current Scopes: none
Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
Link 4 (ipv6leakintrf0)
Current Scopes: DNS
Protocols: +DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
Current DNS Server: ::1
DNS Servers: ::1
DNS Domain: ~.
xxx@xxx:~$ 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=114 time=15.5 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=114 time=16.9 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=114 time=16.8 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=114 time=14.9 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=114 time=15.1 ms
64 bytes from 8.8.8.8: icmp_seq=6 ttl=114 time=13.7 ms
64 bytes from 8.8.8.8: icmp_seq=7 ttl=114 time=13.0 ms
64 bytes from 8.8.8.8: icmp_seq=8 ttl=114 time=14.0 ms
64 bytes from 8.8.8.8: icmp_seq=9 ttl=114 time=17.3 ms
64 bytes from 8.8.8.8: icmp_seq=10 ttl=114 time=15.8 ms
64 bytes from 8.8.8.8: icmp_seq=11 ttl=114 time=16.7 ms
64 bytes from 8.8.8.8: icmp_seq=12 ttl=114 time=16.8 ms
64 bytes from 8.8.8.8: icmp_seq=13 ttl=114 time=15.2 ms
64 bytes from 8.8.8.8: icmp_seq=14 ttl=114 time=13.6 ms
64 bytes from 8.8.8.8: icmp_seq=15 ttl=114 time=14.4 ms
64 bytes from 8.8.8.8: icmp_seq=16 ttl=114 time=15.5 ms
64 bytes from 8.8.8.8: icmp_seq=17 ttl=114 time=15.7 ms
64 bytes from 8.8.8.8: icmp_seq=18 ttl=114 time=14.7 ms
xxx@xxx:~$ ping google.com
ping: google.com: Temporary failure in name resolution
