unable to re-enable wifi

[L4em]

I upgraded ubuntu from 14.04 to 14.10.
After disabling Wi-fi (uncheck "Enable Wi-Fi" in the upper right corner), rebooting, I could not find a way to re-enable it.
I was unable to do it using the command line either, and had to eventually reboot with an old kernel to enable it graphically, then come back to the most recent kernel (3.16.0-24-generic). I have an intel card (iwlwifi-7260).

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubuntu-release-upgrader-core 1:14.10.9
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Wed Oct 29 18:25:59 2014
InstallationDate: Installed on 2014-01-12 (290 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: Upgraded to utopic on 2014-10-27 (2 days ago)
VarLogDistupgradeTermlog: