Comment 274 for bug 1239578

I upgraded to Utopic (from Ubuntu Gnome 14.04) on my Thinkpad T440 and wifi worked without any problems. However, after about a day and a half the system started freezing after using wifi for a few minutes (if I turn the wifi off, then it doesn't freeze), which is the same thing that had happened to me when I installed Larry's driver on 14.04.

I should also mention that the Ubuntu 14.04 from which I upgraded was a clean install without Larry's driver, so the wifi didn't work, but everything else worked fine.

Let me know if you want logs or anything.