Created attachment 680253 [details]
relevant subset of /var/log/zypp/history

Using the NetworkManager to connect to wireless networks fails after recent
updates yesterday. I attached the zypp-log.

Error message:
"Connection failure"
"Failed to add/activate connection"
"(32) No session found for uid 1000 (unknown)"

Here's the output of loginctl:

> loginctl
   SESSION        UID USER             SEAT            

0 sessions listed.

I can't compare this output with a working solution, thus I'm not sure if it's
a bug in NetworkManager, systemd (logind) or the login manager (lightdm AFAIK).
I filed the bug against NetworkManager, as this is the obvious break, and CC'd
systemd. Feel free to reassign if NM is not the culprit.

I have to add that it works with wired networks, which is strange.

Running NM in the foreground:
> sudo NetworkManager --no-daemon
<13>Jun  9 10:23:53 dns-resolver: ATTENTION: You have modified
/etc/resolv.conf. Leaving it untouched...
<13>Jun  9 10:23:53 dns-resolver: You can find my version in
/etc/resolv.conf.netconfig
ATTENTION: You have modified /etc/resolv.conf.  Leaving it untouched...
You can find my version in /etc/resolv.conf.netconfig ...
<Here I tried to connect to WLAN>

Nothing shown here.

I found this similar bug report:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=742950
It was a bug in slim (login manager), but a downgrade of NM also solved the
issue.