Wifi is stuck in Hard blocked: yes and can't use toshiba p50-c-183 FN key to unlock it

[Arthur Lutz]

# rfkill list
0: hci0: Bluetooth
 Soft blocked: no
 Hard blocked: no
1: phy0: Wireless LAN
 Soft blocked: no
 Hard blocked: yes

looking at syslog I see a bunch of :
toshiba_acpi: Unknown key 158

nothing on acpi_listen

# apt-cache policy linux-generic-lts-vivid
linux-generic-lts-vivid:
  Installé : 3.19.0.47.32
  Candidat : 3.19.0.47.32
 Table de version :
 *** 3.19.0.47.32 0
        500 http://fr.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
        100 /var/lib/dpkg/status

# lsb_release -rd
Description: Ubuntu 14.04.3 LTS
Release: 14.04

switching to willy kernel seems to partly solve the problem
# uname -a
Linux pro 4.2.0-25-generic #30~14.04.1-Ubuntu SMP Mon Jan 18 16:25:56 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

the fn key seems to toggle the "Soft blocked" attribute. So still no wifi. This looks similar to https://askubuntu.com/questions/709377/wi-fi-is-disabled-by-hardware-switch-on-toshiba-satellite-p855-335

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.19.0-47-generic 3.19.0-47.53~14.04.1
ProcVersionSignature: Ubuntu 3.19.0-47.53~14.04.1-generic 3.19.8-ckt10
Uname: Linux 3.19.0-47-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
Date: Tue Jan 26 21:03:19 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-01-25 (1 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
SourcePackage: linux-lts-vivid
UpgradeStatus: No upgrade log present (probably fresh install)

[Arthur Lutz (arthur-lutz)]

For some reason this bug fixed itself on it's own. I was about to burn an ISO to upgrade the BIOS (which apparently working in wine, so no need to have a windows machine). I left the laptop run out of batteries and then it stayed without power for a few days. The next time I booted it up, the wifi was working out of the box ! I'm not sure what happenned but maybe the BIOS got reset or something.

[penalvch (penalvch)]

Arthur Lutz, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/linux-lts-vivid/+bug/1538289/comments/2 regarding this being resolved. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.