Public bug reported: nm-applet emits errors to X session error log continuously. Here's summary from my log (with timestamps removed with perl):
$ grep nm-applet .xsession-errors | perl -npe 's/\*\*: \d\d:\d\d:\d\d.\d\d\d: //' | sort | uniq -c 736 (nm-applet:2575): Gtk-CRITICAL gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed 369 (nm-applet:2575): Gtk-WARNING Can't set a parent on widget which has a parent The nm-applet should be fixed to correctly use GTK API. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: network-manager-gnome 1.8.10-2ubuntu3 ProcVersionSignature: Ubuntu 5.4.0-77.86~18.04.1-lowlatency 5.4.119 Uname: Linux 5.4.0-77-lowlatency x86_64 ApportVersion: 2.20.9-0ubuntu7.24 Architecture: amd64 CurrentDesktop: MATE Date: Wed Jul 14 14:21:15 2021 EcryptfsInUse: Yes IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2019-01-05 (920 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) IpRoute: default via 84.251.208.1 dev enp3s0 proto dhcp metric 100 84.251.208.0/20 dev enp3s0 proto kernel scope link src 84.251.221.37 metric 100 169.254.0.0/16 dev enp3s0 scope link metric 1000 IwConfig: enp3s0 no wireless extensions. lo no wireless extensions. NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' SourcePackage: network-manager-applet UpgradeStatus: No upgrade log present (probably fresh install) nmcli-dev: DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH enp3s0 ethernet connected /org/freedesktop/NetworkManager/Devices/2 Ethernet (RJ-45) 6e83ecef-cf26-3a9b-9c6b-7a0a538d0ba8 /org/freedesktop/NetworkManager/ActiveConnection/27 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/1 -- -- -- nmcli-nm: RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN running 1.10.14 connected started full enabled enabled enabled enabled enabled ** Affects: network-manager-applet (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic third-party-packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1936203 Title: nm-applet spams errors continously To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1936203/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs