Comment 21 for bug 1315221

XPS13 wifi behaviour seems to be much better on Linux kernel 3.15.2 from the mainline ubuntu ppa: I was working for 2 hours and had only one disconnection. http://www.yourownlinux.com/2014/06/how-to-install-upgrade-to-linux-kernel-3-15-2-in-linux.html

Running 3.15.3 gave me no disconnections but very low bandwidth (might be just by chance, only tested for 30 mins, very far away from the router).

Note 1: In exchange for better wifi, I lost touch gestures on the touchpad (https://bugs.archlinux.org/task/40921?project=1&openedfrom=-1+week), as "blacklist i2c_hid" had to be removed in order for it to be detected (both on 3.15.2 and 3.15.3). Maybe testing on the latest 3.14 kernel might be good to have reliable wifi plus full touchpad support. I jumped directly to 3.15.2 so I cannot report on it.