I'm still experiencing problems with the wifi randomly not working when resuming from sleep as of the latest 8/20/14 drivers. It gets stuck on "attempting to authenticate" and fails to connect to any wireless network. Disabling and re-enabling the adapter or restarting the computer seems to get it working again.
I've already had Lenovo replace the wifi card once. So I know the problem is inherent in the hardware itself or the drivers.
This is absolutely ridiculous. This crappy wifi adapter has basically turned my $2000 tricked out Thinkpad T440p into a paper weight. Fix your terrible drivers intel or issue a recall. This kind of nonsense is the sort of thing people start class action lawsuits over. A laptop with an unreliable wifi adapter may as well be a brick. Why did you clowns release this card in this state when it was so clearly not ready for prime time?
Normally I have good experiences with Intel products. But the AC 7260 is probably the worst piece of junk you guys have produced since the GMA900 that couldn't run Aero.