I'm having similar problems. In 15.10 wifi worked just fine, but after upgrade to 16.04 it does not work at all. I have the same messages in dmesg.
[ 3.487325] usb 2-1.7: Vendor: Realtek [ 3.487330] usb 2-1.7: Product: 802.11n WLAN Adapter [ 3.487335] usb 2-1.7: RTL8723AU rev B (TSMC) 1T1R, TX queues 2, WiFi=1, BT=1, GPS=0, HI PA=0 [ 3.487338] usb 2-1.7: RTL8723AU MAC: 24:fd:52:8f:1a:52 [ 3.487341] usb 2-1.7: rtl8xxxu: Loading firmware rtlwifi/rtl8723aufw_B_NoBT.bin [ 3.491456] usb 2-1.7: Firmware revision 31.0 (signature 0x2302) [ 3.826305] usb 2-1.7: Firmware failed to start [ 3.832910] usbcore: registered new interface driver rtl8xxxu [ 3.845035] r8723au: module is from the staging directory, the quality is unknown, you have been warned. [ 3.846925] usbcore: registered new interface driver rtl8723au -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574622 Title: RTL8723AU No WiFi after reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1574622/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
