Public bug reported:

Switching off the wireless switch works,
BUT switching on doesn't work,
following
https://www.linuxquestions.org/questions/ubuntu-63/wireless-became-disabled-how-do-i-enable-858357/

i had to use rfkill to reenable that device - i assume that some even is
not mapped correctly - here some debug output:

benste@benste-vpc-sb1c5e:~$ sudo ifconfig wlan0 up
SIOCSIFFLAGS: Operation not possible due to RF-kill
benste@benste-vpc-sb1c5e:~$ sudo rfkill event
1337533722.625287: idx 0 type 1 op 0 soft 1 hard 0
1337533722.625438: idx 1 type 2 op 0 soft 1 hard 0
1337533722.625479: idx 2 type 1 op 0 soft 1 hard 1
#SWITCHED
1337533728.069059: idx 0 type 1 op 2 soft 1 hard 1
1337533728.069139: idx 1 type 2 op 2 soft 1 hard 1
#SWITCHED
1337533730.683552: idx 0 type 1 op 2 soft 1 hard 0
1337533730.684240: idx 1 type 2 op 2 soft 1 hard 0
^[[A^Cbenste@benste-vpc-sb1c5e:~$ sudo rfkill list all
0: sony-wifi: Wireless LAN
        Soft blocked: yes
        Hard blocked: no
1: sony-bluetooth: Bluetooth
        Soft blocked: yes
        Hard blocked: no
2: phy0: Wireless LAN
        Soft blocked: yes
        Hard blocked: yes
#UNITY BUTTON FOR BLUETOOTH
benste@benste-vpc-sb1c5e:~$ sudo rfkill list all
0: sony-wifi: Wireless LAN
        Soft blocked: yes
        Hard blocked: no
1: sony-bluetooth: Bluetooth
        Soft blocked: no
        Hard blocked: no
2: phy0: Wireless LAN
        Soft blocked: yes
        Hard blocked: yes
5: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
benste@benste-vpc-sb1c5e:~$ sudo rfkill list all
0: sony-wifi: Wireless LAN
        Soft blocked: yes
        Hard blocked: no
1: sony-bluetooth: Bluetooth
        Soft blocked: yes
        Hard blocked: no
2: phy0: Wireless LAN
        Soft blocked: yes
        Hard blocked: yes
benste@benste-vpc-sb1c5e:~$ sudo rfkill unblock sony-wifi
Bogus unblock argument 'sony-wifi'.
benste@benste-vpc-sb1c5e:~$ sudo rfkill unblock 0
benste@benste-vpc-sb1c5e:~$ sudo rfkill list all
0: sony-wifi: Wireless LAN
        Soft blocked: no
        Hard blocked: no
1: sony-bluetooth: Bluetooth
        Soft blocked: yes
        Hard blocked: no
2: phy0: Wireless LAN
        Soft blocked: yes
        Hard blocked: no


→→ I'd expext switching the button would at least reenable the wireless

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: rfkill 0.4-1ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Sun May 20 19:11:39 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110426)
SourcePackage: rfkill
UpgradeStatus: Upgraded to precise on 2012-05-14 (6 days ago)

** Affects: network-manager
     Importance: Undecided
         Status: New

** Affects: rfctl
     Importance: Undecided
         Status: New

** Affects: rfkill (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise

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https://bugs.launchpad.net/bugs/1001998

Title:
  Wireless Switch doesn't recover wireless

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