Thinkpad Yoga wakes up on its own after going to sleep blaming lid if wifi was enabled

Recently I've noticed that my Thinkpad Yoga (20CD00B1US) keeps waking up on its own.
powercfg lastwake returns
Wake History Count - 1
Wake History [0]
Wake Source Count - 1
Wake Source [0]
Type: Device
Instance Path: ACPI\PNP0C0D\2&daba3ff&2
Friendly Name:
Description: ACPI Lid
Manufacturer: (Standard system devices)
 It happens either if lid was kept open and I used power button to put it to sleep or if I just close the lid. As soon as I do that I can see red LED goes on and off slowly so I know it is sleeping. However within 5 minutes or less, I see that red LED on top of "i" constantly lit.
If I do powercfg -devicequery wake_armed , I get
Intel(R) Dual Band Wireless-AC 7260
That is really odd. I have WPA2 (PSK) wireless network, and I'm confident other devices are not that smart to send any WOL packets (or whatever it is called for wireless). Also I have AMT and other stuff disabled in BIOS. Intel Smart Connect has Remote Wake set to OFF, Keep Data Fresh is OFF as well. The problem goes away if I turn flight mode (turn off wifi) before sending PC to sleep.
Does anybody else experience similar behavior and what can I do to prevent waking it up without flipping wifi switch? It is so strange that the lid is at blame while the problem is somehow related to wireless adapter.
P.S. Installed BIOS version is 1.05 (not the latest 1.06). All essential updates are installed.
Solved!
Go to Solution.

You may wish to check the WNIC's properties in Device Manager to see if Allow this device to wake the computer under Power Management is selected. If so, deselect to see if your issue is resolved.
Regards.
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    Time stamp                Domain            
    Message                                                                  
    Duration
    Delay   
    ==========                ======            
    =======                                                                  
    ========
    =====   
    1/11/15, 10:09:33 PM PST Sleep            
    Software Sleep pid=45617: Using AC                                      
    37 secs 
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    Time stamp                Domain            
    Message                                                                  
    Duration
    Delay   
    ==========                ======            
    =======                                                                  
    ========
    =====   
    1/11/15, 10:23:56 PM PST Sleep            
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    Delay   
    ==========                ======            
    =======                                                                  
    ========
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    1/11/15, 10:29:27 PM PST Sleep            
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