Bug 88795 - Function keys behave as if Fn is depressed on 2015 X1 Carbon
Summary: Function keys behave as if Fn is depressed on 2015 X1 Carbon
Status: RESOLVED NOTABUG
Alias: None
Product: xkeyboard-config
Classification: Unclassified
Component: General (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: xkb
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Reported: 2015-01-26 08:56 UTC by Larry Hastings
Modified: 2015-02-02 11:50 UTC (History)
0 users

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Description Larry Hastings 2015-01-26 08:56:07 UTC
I have a 2015 Lenovo X1 Carbon, onto which I've installed Ubuntu 14.10 x86-64.  The function keys don't work properly.  Instead, they behave as if the "Fn" key is pressed all the time.  Actually pressing the Fn key makes them behave as if Fn is *not* pressed.

Examples:

Fn+F1 should toggle mute.  Instead, F1 by itself toggles mute.

F1 in a Terminal should open the "Help" window.  Instead, Fn+F1 opens "Help".

Alt+F4 should close the current window.  Instead, Fn+Alt+F4 closes the current window.
Comment 1 Larry Hastings 2015-02-02 11:50:30 UTC
I've since learned that this is new behavior of the Lenovo Thinkpad keyboards.  The Fn key now has "lock" functionality, like Caps Lock or Scroll Lock.  By default Fn is *on*, and pressing Fn turns it *off*.  If you press Fn+Esc, that lights an LED embedded in the Fn key, and now Fn is *off* (and pressing it turns it *on*).


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