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[Andrea Olivo <1289047@xxxxxxxxxxxxxxxxxx>]

Still present in 15.10.

Using a previous version of hostapd is not a valid workaround.

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https://bugs.launchpad.net/bugs/1289047

Title:
  [Trusty] hostapd package is broken

Status in One Hundred Papercuts:
  Triaged
Status in wpa package in Ubuntu:
  Triaged

Bug description:
  When trying to create an access point, I am met with a fatal error
  with hostapd:

  nl80211: Could not configure driver mode
  nl80211 driver initialization failed.
  hostapd_free_hapd_data: Interface wlan0 wasn't started

  What worked before no longer works today after a package upgrade.

  After installing hostapd deb from Ubuntu 13.10, it works.

  WORKAROUND: For this to persist through reboots, execute the following in a terminal:
  sudo nano /etc/NetworkManager/NetworkManager.conf

  Add the following entry where the x's are replaced with your WiFi MAC address, save, and then reboot:
  [keyfile]
  unmanaged-devices=mac:xx:xx:xx:xx:xx:xx

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: hostapd 1:2.1-0ubuntu1
  Uname: Linux 3.14.0-031400rc5-lowlatency x86_64
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  Date: Thu Mar  6 16:57:20 2014
  InstallationDate: Installed on 2014-02-01 (33 days ago)
  InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140121.1)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_CA.UTF-8
   LANGUAGE=en_CA:en
   SHELL=/bin/bash
  SourcePackage: wpa
  UpgradeStatus: No upgrade log present (probably fresh install)

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