Wi-fi becomes disabled sometimes after the lid on the laptop is shut and the OS is suspended for a time. Bluetooth is turned off when this occurs.
The network settings first reports "Wi-Fi is disabled" when the OS is resumed. If the user then disables and re-enables Networking or Wi-Fi via the menu option , the status of the Wi-Fi changes to say "Wi-Fi is disabled by hardware switch".
Toggling the Fn-PrtScr keyboard hardware networking switch has no effect and does not actually re-enable the Wi-Fi. Running "sudo rfkill unblock wifi" also has no effect.
The only known workaround is to restart the machine.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-4.2.0-34-generic 4.2.0-34.39~14.04.1
ProcVersionSignature: Ubuntu 4.2.0-34.39~14.04.1-generic 4.2.8-ckt4
Uname: Linux 4.2.0-34-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Apr 6 15:04:21 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-03-03 (33 days ago)
InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
SourcePackage: linux-lts-wily
UpgradeStatus: No upgrade log present (probably fresh install)
Status changed to 'Confirmed' because the bug affects multiple users.