WiFi network connection unstable after upgrading from 12.04 to 14.04

[Héctor Velarde]

After upgrading from 12.04 to 14.04 on a Dell Vostro 3400 the Wi-Fi network connection became unstable: no automatic connection on start up and no network at all after resuming from an hibernation. Both of them were working previously.

This reports relates to #1340729 and #1340730.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: wpasupplicant 2.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-30.55-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
Date: Fri Jul 11 09:46:02 2014
ExecutablePath: /sbin/wpa_supplicant
InstallationDate: Installed on 2010-09-25 (1385 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Beta amd64 (20100901.1)
ProcEnviron:

SourcePackage: wpa
UpgradeStatus: Upgraded to trusty on 2014-07-07 (3 days ago)