Comment 2 for bug 226928

But I think the button should switch wifi radio on/off. In Windows it does; there the respective light is on only when WLAN connection is on, I suppose. (I haven't used such a connection yet, but the light does not respond to the button and I tried it outside a wireless network.) User manual of my laptop says about the wireless communication button/indicator: "Press to enable/disable the wireless function. Indicates the status of wireless LAN communication."

Some dmesg lines that may relate to this problem:
[ 39.698577] input: b43-phy0 as /devices/virtual/input/input11
[ 40.931334] Registered led device: b43-phy0:tx
[ 40.931776] Registered led device: b43-phy0:rx
[ 40.932118] Registered led device: b43-phy0:radio
[ 836.900095] atkbd.c: Unknown key pressed (translated set 2, code 0x55 on isa0060/serio0).
[ 836.900103] atkbd.c: Use 'setkeycodes 55 <keycode>' to make it known.
[ 836.900215] atkbd.c: Unknown key pressed (translated set 2, code 0x55 on isa0060/serio0).
[ 836.900218] atkbd.c: Use 'setkeycodes 55 <keycode>' to make it known.
[ 1056.178269] b43-phy0: Radio turned on by software