This happened to me when I upgraded from 16.04 LTS to 18.04 LTS, I noticed error dialog boxes during the install but unsure if they are related.
The /etc/resolv.conf contained: # Generated by NetworkManager search lan nameserver 127.0.0.53 I compared it to a fresh install of 18.04 and this had /etc/resolv.conf as a symlink pointing to /run/systemd/resolve/stub-resolv.conf, so I modified the broken system with these commands. sudo mv /etc/resolv.conf /etc/resolv.conf.bak sudo ln -s /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf But this did not work. I then found that the broken system had the package resolvconf installed that is not installed on the new 18.04 installation so I removed it with the command: sudo apt purge resolvconf After a reboot my networking now works though the /etc/resolv.conf symlink has become a file again containing: # Generated by NetworkManager search lan nameserver 192.168.1.1 The command systemd-resolve --status still fails with the error: Failed to get global data: Unit dbus-org.freedesktop.resolve1.service not found. So I suspect this is not a correct fix but more of an accidental workaround. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1795852 Title: "systemd-resolve --status" reports "Failed to get global data: Unit dbus-org.freedesktop.resolve1.service not found." Status in systemd package in Ubuntu: Confirmed Bug description: "systemd-resolve --status" reports "Failed to get global data: Unit dbus-org.freedesktop.resolve1.service not found." -> resolv.conf only holds two lines: --- snip nameserver 127.0.0.1 --- snap and "host google.com" leads to Host google.com not found: 5(REFUSED) dnsmasq is running, but does not know whom to query upstream, because "/etc/resolv.conf" only holds the local address. "/etc/resolv.conf" is created by "resolvconf". Systems address is assigned by dhclient. "/etc/dhcp/dhclient.conf" holds: --- snip option rfc3442-classless-static-routes code 121 = array of unsigned integer 8; send host-name = gethostname(); request subnet-mask, broadcast-address, time-offset, routers, domain-name, domain-name-servers, domain-search, host-name, dhcp6.name-servers, dhcp6.domain-search, dhcp6.fqdn, dhcp6.sntp-servers, netbios-name-servers, netbios-scope, interface-mtu, rfc3442-classless-static-routes, ntp-servers; timeout 300; --- snap There are three instances of dnsmasq started: --- snip 7272 ? S 0:00 /usr/sbin/dnsmasq -x /run/dnsmasq/dnsmasq.pid -u dnsmasq -r /run/dnsmasq/resolv.conf -7 /etc/dnsmasq.d,.dpkg-dist,.dpkg-old,.dpkg-new --local-service --trust-anchor=.,19036,8,2,49aac11d7b6f6446702e54a1607371607a1a41855200fd2ce1cdde32f24e8fb5 --trust-anchor=.,20326,8,2,e06d44b80b8f1d39a95c0b0d7c65d08458e880409bbc683457104237c7f8ec8d 7838 ? S 0:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper 7839 ? S 0:00 \_ /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper --- snap "/etc/network/interaces" holds: --- snip # Local loopback auto lo iface lo inet loopback --- snap What I'd expected after upgrading: working network config with a working "/etc/resolv.conf"! ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: systemd 237-3ubuntu10.3 ProcVersionSignature: Ubuntu 4.4.0-137.163-generic 4.4.144 Uname: Linux 4.4.0-137-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 Date: Wed Oct 3 11:57:42 2018 InstallationDate: Installed on 2011-10-19 (2540 days ago) InstallationMedia: Xubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) MachineType: Acer TravelMate P643-M ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-137-generic root=/dev/mapper/vg-root ro elevator=deadline splash acpi=force reboot=bios ipv6.disable=1 vt.handoff=1 SourcePackage: systemd UpgradeStatus: Upgraded to bionic on 2018-10-02 (1 days ago) dmi.bios.date: 10/21/2013 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: V2.15 dmi.board.asset.tag: No Asset Tag dmi.board.name: TravelMate P643-M dmi.board.vendor: Acer dmi.board.version: V2.15 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: Acer dmi.chassis.version: V2.15 dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrV2.15:bd10/21/2013:svnAcer:pnTravelMateP643-M:pvrV2.15:rvnAcer:rnTravelMateP643-M:rvrV2.15:cvnAcer:ct9:cvrV2.15: dmi.product.name: TravelMate P643-M dmi.product.version: V2.15 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1795852/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
