I was having some iwl wifi microcode errors for 05:00.0 Network controller: Intel Corporation Centrino Advanced-N 6235 (rev 24) which was making my system unresponsive to the point that it messed with login.d and prevented my system from shutting down. after a few days of this I resorted to removing the modules but when I ran this after stopping networkmanager sudo modprobe -r iwldvm iwlwifi this happened and when I did sudo lsmod | grep iwlwifi this was the output iwlwifi 585728 -1 cfg80211 1495040 1 iwlwifi I have since successfully blacklisted that module but any insight will be helpful as I am without wifi for the moment