The output of the command you asked for is $ systemctl status NetworkManager ● NetworkManager.service - Network Manager Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled) Active: active (running) since Mon 2020-02-17 08:51:10 -03; 5h 33min ago Docs: man:NetworkManager(8) Main PID: 1206 (NetworkManager) Tasks: 3 (limit: 4915) Memory: 22.7M CGroup: /system.slice/NetworkManager.service └─1206 /usr/sbin/NetworkManager --no-daemon
fev 17 08:51:53 adcamp NetworkManager[1206]: <info> [1581940313.9009] device (p2p-dev-wlp3s0): supplicant management interface state: com fev 17 08:51:53 adcamp NetworkManager[1206]: <info> [1581940313.9421] device (wlp3s0): supplicant interface state: authenticating -> asso fev 17 08:51:53 adcamp NetworkManager[1206]: <info> [1581940313.9422] device (p2p-dev-wlp3s0): supplicant management interface state: aut fev 17 08:51:53 adcamp NetworkManager[1206]: <info> [1581940313.9453] device (wlp3s0): supplicant interface state: associating -> associa fev 17 08:51:53 adcamp NetworkManager[1206]: <info> [1581940313.9453] device (p2p-dev-wlp3s0): supplicant management interface state: ass fev 17 08:51:54 adcamp NetworkManager[1206]: <info> [1581940314.0257] device (wlp3s0): supplicant interface state: associated -> complete fev 17 08:51:54 adcamp NetworkManager[1206]: <info> [1581940314.0274] device (p2p-dev-wlp3s0): supplicant management interface state: ass fev 17 08:55:57 adcamp NetworkManager[1206]: <info> [1581940557.0456] agent-manager: req[0x5652c8d3ab10, :1.407/org.gnome.Shell.NetworkAg fev 17 09:00:01 adcamp NetworkManager[1206]: <info> [1581940801.3983] dhcp4 (wlp3s0): state changed bound -> expire fev 17 09:00:01 adcamp NetworkManager[1206]: <info> [1581940801.3985] device (wlp3s0): DHCPv4: 480 seconds grace period started As the other thread mentions, it seems that it has to do with the NetworkManager. Since mine was already running (as I understood from the output above), I restarted it with $systemctl restart NetworkManager and the settings are working again. But the outputs of the status seems the same to me. See, after restart $ systemctl status NetworkManager ● NetworkManager.service - Network Manager Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled) Active: active (running) since Mon 2020-02-17 15:15:22 -03; 14s ago Docs: man:NetworkManager(8) Main PID: 9778 (NetworkManager) Tasks: 4 (limit: 4915) Memory: 7.7M CGroup: /system.slice/NetworkManager.service └─9778 /usr/sbin/NetworkManager --no-daemon fev 17 15:15:29 adcamp NetworkManager[9778]: <info> [1581963329.8784] device (p2p-dev-wlp3s0): supplicant management interface state: dis fev 17 15:15:29 adcamp NetworkManager[9778]: <info> [1581963329.8802] device (wlp3s0): supplicant interface state: authenticating -> asso fev 17 15:15:29 adcamp NetworkManager[9778]: <info> [1581963329.8802] device (p2p-dev-wlp3s0): supplicant management interface state: aut fev 17 15:15:29 adcamp NetworkManager[9778]: <info> [1581963329.8924] device (wlp3s0): supplicant interface state: associating -> associa fev 17 15:15:29 adcamp NetworkManager[9778]: <info> [1581963329.8924] device (p2p-dev-wlp3s0): supplicant management interface state: ass fev 17 15:15:30 adcamp NetworkManager[9778]: <info> [1581963330.0012] device (wlp3s0): supplicant interface state: associated -> complete fev 17 15:15:30 adcamp NetworkManager[9778]: <info> [1581963330.0013] device (wlp3s0): Activation: (wifi) Stage 2 of 5 (Device Configure) fev 17 15:15:30 adcamp NetworkManager[9778]: <info> [1581963330.0013] device (p2p-dev-wlp3s0): supplicant management interface state: ass fev 17 15:15:30 adcamp NetworkManager[9778]: <info> [1581963330.0015] device (wlp3s0): state change: config -> ip-config (reason 'none', fev 17 15:15:30 adcamp NetworkManager[9778]: <info> [1581963330.0020] dhcp4 (wlp3s0): activation: beginning transaction (timeout in 45 se However, the settings open only once. After closing it, it gives the same error. And if I restart the NetworkManager it opens again (once). -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1862767 Title: gnome-control-center crashes when try to open it Status in gnome-control-center package in Ubuntu: Incomplete Bug description: gnome-control center crashes when trying to open it. Tested as following $ gnome-control-center --verbose ** cc-object-storage:ERROR:../shell/cc-object-storage.c:167:cc_object_storage_add_object: assertion failed: (G_IS_OBJECT (object)) Bail out! cc-object-storage:ERROR:../shell/cc-object-storage.c:167:cc_object_storage_add_object: assertion failed: (G_IS_OBJECT (object)) Aborted (core dumped) When trying to open it through the graphical interface it dies silently. A message of error would help too. Additional information: $ lsb_release -rd Description: Ubuntu 19.10 Release: 19.10 $ apt-cache policy gnome-control-center gnome-control-center: Installed: 1:3.34.1-1ubuntu2 Candidate: 1:3.34.1-1ubuntu2 Version table: *** 1:3.34.1-1ubuntu2 500 500 http://us.archive.ubuntu.com/ubuntu eoan/main amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: gnome-control-center 1:3.34.1-1ubuntu2 ProcVersionSignature: Ubuntu 5.3.0-29.31-generic 5.3.13 Uname: Linux 5.3.0-29-generic x86_64 ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Tue Feb 11 09:24:49 2020 InstallationDate: Installed on 2018-05-07 (644 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) SourcePackage: gnome-control-center UpgradeStatus: Upgraded to eoan on 2019-10-31 (102 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1862767/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp