After upgrading from 15.10 to 16.04, when I switch wifi networks using the network manager applet, all networking capability is lost. Before selecting the different wifi network, the wifi works perfectly. After I lose connection, I can restart the wifi using
sudo systemctl restart network-manager.service. But I can't switch networks.
At the bottom of this post is a screenshot showing what the applet looks like after the attempt to switch networks: no wifi networks are visible from the applet's list, and the applet reports "device not ready."
Here is the output from
lspci -knn | grep Net -A2; rfkill list:
03:00.0 Network controller : Intel Corporation Wireless 7260 [8086:08b1] (rev 6b) Subsystem: Intel Corporation Dual Band Wireless-N 7260 [8086:4160] Kernel driver in use: iwlwifi 0: asus-wlan: Wireless LAN Soft blocked: no Hard blocked: no 1: phy0: Wireless LAN Soft blocked: no Hard blocked: no 2: hci0: Bluetooth Soft blocked: no Hard blocked: no
The results of
modinfo iwlwifi | grep 7260 are:
Please note that this is unrelated to the commonly reported bug that wifi does not work on resume from suspend. There are at least three solutions to that issue here. I tried all of those suggestions, plus I also installed network-manager_1.2.0-0, all to no avail.
The issue I am requesting help on is specifically that wifi completely stops working whenever I attempt to switch networks.
I am adding a bounty and the results from the wifi script on ubuntuforums. Also, please note that I installed iwlwifi-7260-17.
I also am aware of the suggestions in bug report #1574347 (I posted on that report on post #8, although I think that the bug report is for the suspend-resume issue not my changing APs issue). In all events, I tried the suggestions to upgrade
network-manager-gnome (see post #42), to no avail.
I also am aware of bug report #1311257 and the suggested script to fix that bug. I implemented that script and regressed back to the suspend-resume issue.