Reviewed the dmesg everything looks fine. rfkill entry is gone and no
longer block wireless.

The patch is tested on LKML[1] and so far seems everyone is happy with
it. I will backport this patch to oneiric/precise after merged into
Linus' kernel.

The problem is not totally solved. Wireless connectivity is still not
available. Possible reason is EC still remember that soft block on
wireless. Since acer-wmi and thinkpad-acpi do not have wireless
capability, there is no way to unblock it.

One possible way to unblock it is to remove the battery/AC for 30min and
reset BIOS to factory default.

[1] 
http://www.mail-archive.com/[email protected]/msg02865.html
    
http://www.mail-archive.com/[email protected]/msg02872.html

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https://bugs.launchpad.net/bugs/826784

Title:
  [ThinkPad Edge E520] Wireless is always soft-blocked

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