I have a problem with the wifi randomly deciding to not complete configuration after startup.
Instead, it thinks about it for a while, then drops you back to the “Connect” button.
It does successfully connect, and once connected seems to work fine, but no rhyme or reason to its tempermental nature.
One, after start up it seems to take much longer than normal to prompt for the KDE password manager (30s rather than 3s).
Once it has accepted the password, it will sit and configure the network for ~45s, before failing, after which you need to “Connect” again.
Sometimes it will connect first time, some times after the second or third “Connect”, sometimes it simply can’t be bothered.
This laptop is a 2012 era Samsung Series 9 ultrabook with an Ivybridge 17W dual-core.
The network is a netgear 2800AC fibre modem/router in use since mid-2017.
The laptop has always connected flawlessly to the network (in current and preveious incarnations), on various Suse Leap versions back to 42.1.
The network has not changed configuration since mid-2017, and all existing wired and wireless devices connect fine (inc the notebook yesterday on 42.3).
Signal strength isn’t perfect from where it is used, but it is definately not marginal - or even low.