[ltp] ThinkPad T520 first experiences

Robert Tomsick linux-thinkpad@linux-thinkpad.org
Sat, 21 May 2011 11:31:29 -0400

On Sat, 2011-05-21 at 10:54 +0200, Martin Steigerwald wrote:
> ThinkPad keys that do nothing:
> - Fn-F12: hibernate
> - Fn-F2: lock symbol, whats this one meant for?
> - Fn-F3: battery plus symbol, whats this one meant for?
> - Fn-F6: webcam, ditto?
> - Fn-F7: externel screen
> - Fn-F8: whats this?

At least some of these keys do work, but they're probably not mapped to
do anything on your machine.

You can use xev to see what key presses they're producing.

Some, but not all of them will produce ACPI events.  

Fn-F2  -> button/screenlock SCRNLCK 00000080 00000000
Fn-F3  -> button/battery BAT 00000080 00000000
Fn-F7  -> video/switchmode VMOD 00000080 00000000
Fn-F12 -> button/suspend SUSP 00000080 00000000

Now you can map all of the keys to do whatever you want -- the process
varies depending on what desktop environment you're using and what the
key is -- but the intended function is as follows:

Fn-F2 - lock the screen (IIRC this should result in a XF86ScreenSaver
key event)

Fn-F3 - display information on the battery (i.e. remaining charge time)

Fn-F6 - webcam/VoIP?  I dunno actually -- I assume it's some
Windows-specific feature

Fn-F8 - toggle between TrackPoint (the left icon) and touchpad