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I ran the Ubuntu installer for Windows (Wubi) and now my fn+f4 button does not work in Windows anymore. This is the button that is usually the monitor switcher (primary, secondary, mirror). This now just types the letter p after a sub-second delay while I'm booted into Windows.

Is there any way to resolve this? (without removing Ubuntu).

Here are all my function buttons

  • fn+f1 (Windows Help): This does not work. Flag+f1 works but I don't care anyway.
  • fn+f2 (Print): This still works, same as Ctrl+P
  • fn+f3 (Internet): This still works.
  • fn+f4 (Monitor): This is the one that I use most but just types the letter p after a very short delay
  • fn+f5 (Sleep): This still works.
  • fn+f6 (Lock): This does not work. But I always use Flag+L anyway so I don't care.
  • fn+f7 (Brighten Screen): This still works.
  • fn+f8 (Darken Screen): This still works.
  • fn+f9 (Play/Pause): Have not tried.
  • fn+f10 (Stop): Have not tried.
  • fn+f11 (Next Track): Have not tried.
  • fn+f12 (Previous Track): Have not tried.
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The reason for the letter P being typed is because Microsoft gave a recommendation to the hardware manufacturers to actually type "Win+P" if the person hits the monitor switching key. This is hardcoded in your hardware.

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Win+P does not work either. It has the same effect of typing the letter p. – George Bailey May 11 '11 at 14:13
Which is why you're getting a P -- because Win+P is meaningless in Linux. That Fn key, prior to this recommendation by Microsoft, would have sent an OS call. Now it just sends a Windows-specific keyboard shortcut. If you were Greek, you might get Pi when you press that key though. – maco May 11 '11 at 15:00
So are you saying that I am actually running Linux when I boot into Windows? All this is happening with Windows. Have not yet tried to boot to Ubuntu. – George Bailey May 11 '11 at 15:03
OH! You're asking on a Linux site, so I assumed you meant in Linux. I'm going to change your original question to specify. – maco May 11 '11 at 15:09

The reason why it is displaying a p is because the monitor switching function is still activated, if you're using Windows 7, just hit fn+F4 again and it will display the several display options, choose the one you need and hit Enter, this will deactivate the function and the F4 will become normal again.

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Pressing Fn+F4 just types the letter 'p' according to the question. – Mark Paskal Oct 23 '12 at 13:02

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