Bug#677186: gnome-shell: It's possible to turn off wifi networking using keyboard fn when session locked

[Arturo Borrero Gonzalez]

2012/6/12 Florian Weimer <fw at deneb.enyo.de>:
> * Arturo Borrero Gonzalez:
>
>> If the session is locked (for example, using CTRL+ALT+L), it's
>> possible to turn on/off wireless networking on my netbook, using the
>> FN key + the wireless key.
>>
>> This happen in an ASUS EEEPC 101 netbook.
>
> How is this key implemented?  Is it a hardware/SMM switch?
> What happens in single-user mode?


This is what I see in syslog, when start:
Jun 12 20:47:19 xwing NetworkManager[1458]: <info> WiFi now enabled by
radio killswitch
Jun 12 20:47:19 xwing NetworkManager[1458]: <info> (wlan0): bringing up device.
Jun 12 20:47:19 xwing kernel: [  908.277966] ADDRCONF(NETDEV_UP):
wlan0: link is not ready
Jun 12 20:47:19 xwing NetworkManager[1458]: <info> (wlan0): supplicant
interface state: starting -> ready
Jun 12 20:47:19 xwing NetworkManager[1458]: <info> (wlan0): device
state change: unavailable -> disconnected (reason
'supplicant-available') [20 30 42]
Jun 12 20:47:19 xwing NetworkManager[1458]: <info> (wlan0): supplicant
interface state: ready -> inactive
Jun 12 20:47:19 xwing NetworkManager[1458]: <warn> Trying to remove a
non-existant call id.
Jun 12 20:47:20 xwing NetworkManager[1458]: <info> Auto-activating
connection 'Auto eduroam'.
Jun 12 20:47:20 xwing NetworkManager[1458]: <info> Activation (wlan0)
starting connection 'Auto eduroam'
Jun 12 20:47:20 xwing NetworkManager[1458]: <info> (wlan0): device
state change: disconnected -> prepare (reason 'none') [30 40 0]

When stop:

Jun 12 20:46:52 xwing NetworkManager[1458]: <info> WiFi now disabled
by radio killswitch
Jun 12 20:46:52 xwing NetworkManager[1458]: <info> (wlan0): device
state change: activated -> unavailable (reason 'none') [100 20 0]
Jun 12 20:46:54 xwing kernel: [  882.908758] cfg80211: World
regulatory domain updated:
Jun 12 20:46:54 xwing kernel: [  882.908767] cfg80211:     (start_freq
- end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Jun 12 20:46:54 xwing kernel: [  882.908776] cfg80211:     (2402000
KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jun 12 20:46:54 xwing kernel: [  882.908783] cfg80211:     (2457000
KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Jun 12 20:46:54 xwing kernel: [  882.908790] cfg80211:     (2474000
KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Jun 12 20:46:54 xwing kernel: [  882.908797] cfg80211:     (5170000
KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jun 12 20:46:54 xwing kernel: [  882.908804] cfg80211:     (5735000
KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jun 12 20:46:54 xwing NetworkManager[1458]: <info> (wlan0):
deactivating device (reason 'none') [0]
Jun 12 20:46:54 xwing NetworkManager[1458]: <info> (wlan0): canceled
DHCP transaction, DHCP client pid 3850
Jun 12 20:46:54 xwing avahi-daemon[1819]: Withdrawing address record
for 10.100.4.255 on wlan0.
Jun 12 20:46:54 xwing avahi-daemon[1819]: Leaving mDNS multicast group
on interface wlan0.IPv4 with address 10.100.4.255.
Jun 12 20:46:54 xwing avahi-daemon[1819]: Interface wlan0.IPv4 no
longer relevant for mDNS.


The key is the F2 keyboard standar key, wich when pressing FN works as
a wifi switch. I don't know what is SMM and I haven't test in
single-user mode. I'm sorry, but in order to do more test I need more
time.

-- 
/* Arturo Borrero Gonzalez || cer.inet at linuxmail.org */
/* Use debian gnu/linux! Best OS ever! */