Bug 476323

Summary:	"No connections found" after restarting NetworkManager 1.44
Product:	[Plasma] plasma-nm	Reporter:	K900 <me>
Component:	applet	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	nicolas.fella
Priority:	NOR
Version:	5.27.9
Target Milestone:	---
Platform:	Other
OS:	Other
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description K900 2023-10-30 12:03:19 UTC

SUMMARY

When running NetworkManager 1.44 and plasma-nm, and restarting NetworkManager (e.g. with `systemctl restart NetworkManager`), the plasma-nm applet enters a weird state where it always shows "No connections found", despite NM operating properly in the background. Restarting Plasma or the applet (if loaded separately) fixes it until the next NM restart.

Reported in NixOS: https://github.com/NixOS/nixpkgs/pull/263985
Also reported in Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1053707
Also similar issues reported in Arch: https://www.reddit.com/r/archlinux/comments/16in04o/plasma_nm_applet_does_not_show_any_networks_and/

STEPS TO REPRODUCE
1. Use NetworkManager 1.44
2. `systemctl restart NetworkManager`

OBSERVED RESULT
Applet shows "No connections found"

EXPECTED RESULT
Applet shows connections properly

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: NixOS unstable
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.110
Qt Version: 5.11 + KDE patchsets

ADDITIONAL INFORMATION
This used to work fine with NM 1.42.x, so something must have changed in between 1.42.x and 1.44.0 that causes this behavior.

Comment 1 Nicolas Fella 2023-10-30 12:43:47 UTC

Thanks! There are other reports about this being broken, but that it's related to the NetworkManager version is new and very useful information

*** This bug has been marked as a duplicate of bug 471870 ***

Comment 2 K900 2023-10-30 12:48:27 UTC

I am actually not entirely sure this is the same bug - 471870 mentions the applet disappearing entirely, while at least in my case it is still there, just not listing connections.

Comment 3 Nicolas Fella 2023-10-30 13:20:35 UTC

There seem to be different symptoms for different people. For me the applet is there with no connections.

They may or may not have the same root cause, we'll see after investigating