Getting special keys to work

Israel israeldahl at
Tue Apr 29 01:03:21 UTC 2014

On 04/28/2014 07:48 PM, John Hupp wrote:
> I was trying to watch Netflix on a laptop (with Lubuntu) connected to
> a TV by S-Video connection.  I found out that Fn-F7 was not working to
> select the external VGA or S-Video displays.
> Subsequently I found that Fn-F4 does not put the laptop to sleep, and
> Fn-F5 does not toggle the WiFi radio on/off.  (The other common
> special keys work OK.)
> So I'm trying to get those keys working that way via entries in
> lubuntu-rc.xml.
> With 'xev -event keyboard' I found out that Fn-F7 produces the keysym
> 'XF86Display' but I still need to know what command to bind that to. 
> So that's my first question.
> Fn-F4 and Fn-F5 does not produce any keysym's, so I'm currently at a
> loss for how to proceed next with those.

you can use arandr to make a shell script to switch the display to a
certain mode.  Plug in the monitor and use arandr to make a setup you
want, and save that.  Then open your config file for openbox and set
the keyboard shortcut for your display key (i.e. XF86Display)
to execute the
/bin/bash /path/to/
while is whatever you saved the setup as with the correct

arandr is a front-end for xrandr.  So the script is actually using
xrandr to modify your display settings.

I hope this helps.


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