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[Bug 1436891] Re: Cannot connect to any WiFi access point which runs wireless-N

 

$ sudo apport-collect 1436891
ERROR: Could not import module, is a package upgrade in progress?  Error: No module named PyQt4.QtCore

Created duplicate report, on linux:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1437084

This issue happened for all kernel versions I've tried in 15.04, from
the beta live CD to the current kernel.  The problem does not exist with
the 14.10 or 14.04.2 live CDs

It may be a few days before I try the upstream kernel.

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1436891

Title:
  Cannot connect to any WiFi access point which runs wireless-N

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  When attempting to connect to a WiFi access point with N wireless, two popup messages appear:
  Connection 'SSID' deactivated.
  The WiFi network could not be found

  Expected behaviour:  Connects to network.

  Minimal demonstration:  connect to a WiFi access point by both LAN and
  WiFi B/G.  Log in to access point, change it to B/G/N.  Connection is
  lost, cannot be re-established until reverted to B/G.

  Previous troubleshooting located here:
  https://www.kubuntuforums.net/showthread.php?67556-Can-t-use-wifi

  Description:    Ubuntu Vivid Vervet (development branch)
  Release:        15.04
  linux-firmware 1.143

  Can connect normally (with N) from 14.04.2 and 14.10 live CDs.  Can
  connect in 15.04 if and only if N deactivated in access point.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-firmware 1.143
  ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
  Uname: Linux 3.19.0-10-generic x86_64
  ApportVersion: 2.16.2-0ubuntu4
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Fri Mar 27 00:14:58 2015
  Dependencies:
   
  InstallationDate: Installed on 2015-03-04 (22 days ago)
  InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150224.1)
  PackageArchitecture: all
  SourcePackage: linux-firmware
  UpgradeStatus: No upgrade log present (probably fresh install)

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References