Hello, I hoped, that this patch [1] could have fixed the problem - but it didn't. After doing a scan, there can be seen this error message in wpa_supplicant.log: nl80211: send_and_recv->nl_recvmsgs failed: -33 After that, the CTRL-EVENT-BEACON-LOSS have been coming up again and short time later, the connection has been broken (but could be reconnected again and disconnected again and so on). Pretty unusable. Thanks Klaus [1] https://marc.info/?l=linux-wireless&m=160914401525592&w=2