I can't connect anymore to my home wifi since upgrading my machine from Ubuntu 15.04 to Ubuntuy 15.10. I was previously running kernel 4.3.0-rc2 from kernel.org without any problem. After the upgrade, and with the same kernel, I couldn't connect anymore. I built 4.3.0-rc7, and the problem remains. However, I can connect to the wifi access point from my Android phone. Here are the relevant lines from syslog. Let me know if you need more information. --8<---------------cut here---------------start------------->8--- Oct 26 16:11:38 touco wpa_supplicant[734]: wlx6045bdf646b4: Trying to associate with f4:ca:e5:ef:be:18 (SSID='southcentral' freq=2462 MHz) Oct 26 16:11:38 touco wpa_supplicant[734]: wlx6045bdf646b4: CTRL-EVENT-ASSOC-REJECT status_code=1 Oct 26 16:11:38 touco kernel: [ 66.745281] usb 1-3: info: trying to associate to 'southcentral' bssid f4:ca:e5:ef:be:18 Oct 26 16:11:38 touco kernel: [ 66.745289] usb 1-3: info: mwifiex_is_network_compatible: failed: wpa_ie=0xdd wpa2_ie=0x0 WEP=d WPA=d WPA2=d EncMode=0xfac02 privacy=0x1 Oct 26 16:11:38 touco kernel: [ 66.745291] usb 1-3: Incompatible network settings Oct 26 16:11:38 touco kernel: [ 66.745294] usb 1-3: info: association to bssid f4:ca:e5:ef:be:18 failed --8<---------------cut here---------------end--------------->8--- The machine is a Microsoft Surface Pro. I've been having a lot of problems getting the wifi to work but never this particular one, and they were all fixed in 4.3.0-rc2. Julien. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html