KDE System Settings crashes (segfaults) whenever I click "Connections" tab

[ramirez7]

Issue description

Whenever I open the Connections tab in KDE System Settings, it crashes completely.

Steps to reproduce

Open System Settings and Click "Connections"

Technical details

$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 5.4.35, NixOS, 20.03.1619.ab3adfe1c76 (Markhor)`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.3.4`
 - channels(root): `"nixos-20.03.1619.ab3adfe1c76"`
 - channels(armando): `"nixpkgs-20.09pre221814.10100a97c89"`
 - nixpkgs: `/home/armando/.nix-defexpr/channels/nixpkgs`

I launched with systemsettings5 on the command line, and it gave me this output (segfault):

$ systemsettings5
kf5.kactivity.stat: [Error at ResultSetPrivate::initQuery]:  QSqlError("1", "Unable to execute statement", "no such column: rl.initiatingAgent")
kf5.kactivity.stat: [Error at ResultSetPrivate::initQuery]:  QSqlError("1", "Unable to execute statement", "no such column: rl.initiatingAgent")
Error loading KCM plugin "kcm_networkmanagement" "The shared library was not found."
Segmentation fault (core dumped)

journalctl -f during it:

Aug 11 20:39:33 nixos kernel: .systemsettings[4136]: segfault at 3fce6 ip 000000000003fce6 sp 00007ffc506568c8 error 14 in .systemsettings5-wrapped[400000+c000]
Aug 11 20:39:33 nixos kernel: Code: Bad RIP value.
Aug 11 20:39:33 nixos systemd[1]: Started Process Core Dump (PID 4152/UID 0).
Aug 11 20:39:33 nixos xsession[10432]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 391, resource id: 65011718, major code: 15 (QueryTree), minor code: 0
Aug 11 20:39:33 nixos xsession[10432]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 396, resource id: 65011718, major code: 18 (ChangeProperty), minor code: 0
Aug 11 20:39:35 nixos systemd-coredump[4153]: Process 4136 (.systemsettings) of user 1000 dumped core.

HOWEVER..if I have the KDE Wallet Manager open w/my wallet Open while I click "Connections", it no longer crashes. I specifically opened the KDE Wallet Manager from the "Account Details" tab. If I open it directly from the taskbar, "Connections" still crashes. So I do have a workaround.

Also, in the "Connections" tab, I get an error notification whenever I click a new network:

Failed to get secrets for NETWORK_NAME

No agents were available for this request.

I also can only add new networks by adding them with wifi passwords unencrypted. When I try to add them in the taskbar, it doesn't work and I see this in journalctl -u NetworkManager:

Aug 11 20:18:02 nixos NetworkManager[865]: <warn>  [1597202282.2898] sup-iface[0x1a933c0,wlp0s20f3]: connection disconnected (reason -3)
Aug 11 20:18:02 nixos NetworkManager[865]: <warn>  [1597202282.8318] device (wlp0s20f3): no secrets: No agents were available for this request.
Aug 11 20:18:02 nixos NetworkManager[865]: <warn>  [1597202282.8328] device (wlp0s20f3): Activation: failed for connection 'NETWORK_NAME'

Relevant expressions from configuration.nix

{
  networking.networkmanager.enable = true;

  # Open kwallet on login
  security.pam.services.kwallet = {
      name = "kwallet";
      enableKwallet = true;
    };

  # Enable the KDE Desktop Environment.
  services.xserver.displayManager.sddm.enable = true;
  services.xserver.desktopManager.plasma5.enable = true;
}

[FRidh]

related #102253

[stale]

I marked this as stale due to inactivity. → More info