[Bug 1387306] [NEW] unable to re-enable wifi

[L4em]

Public bug reported:

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:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade utopic

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https://bugs.launchpad.net/bugs/1387306

Title:
  unable to re-enable wifi

Status in “ubuntu-release-upgrader” package in Ubuntu:
  New

Bug description:
  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:

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