(In reply to Igor Kuznetsov from comment #13) > Created attachment 788172 [details] > networkmanager log while it happen again >From the log, the only hint I can find is > NetworkManager[30840]: <warn> [1541091826.9778] device (wlp2s0): No agents were available for this request It means no secret agent is registered to provide password for Wi-Fi connections. Can you attach a new log with all system logs?