Getting special keys to work
John Hupp
lubuntu at prpcompany.com
Wed Apr 30 19:30:09 UTC 2014
I spoke too soon. All the programs (rfkill, pm-suspend, pm-hibernate)
must run as root, and nothing I have tried so far has allowed these keys
to work as I intend.
I created /home/<user>/.config/openbox/toggle-wifi.sh with this content:
#!/bin/bash
if [ $(rfkill list wifi | grep "Soft blocked: yes" | wc -l) -eq 1 ] ; then
rfkill unblock wifi
zenity --info --text "Enabled wireless"
else
rfkill block wifi
zenity --info --text "Disabled wireless"
fi
And then:
chown root:root toggle-wifi.sh
chmod 4755 toggle-wifi.sh
I also tried inserting 'sudo command' in front of the rfkill commands in
toggle-wifi.sh, and I tried 'sudo command toggle-wifi.sh' in the
lubuntu-rc.xml command statement.
On 4/30/2014 1:09 PM, John Hupp wrote:
> After thinking about it, I used an Upstart job to do what the
> MultiMediaKeys article instructed to be done with bootmisc.sh or
> rc.local.
>
> Though I'm no better than an Upstart hacker, especially with regard to
> choice of a 'start on' event, I created
> /etc/init/kb-keys-customize.conf with this content:
>
> # kb-keys-customize
> #
> # Map key codes to the scan codes emitted by Fn-F4, Fn-F5, Fn-F12
>
> description "Map Fn-F4, Fn-F5 and Fn-F12 kernel scancodes to kernel
> keycodes"
> author "John Hupp"
>
> start on local-filesystems
>
> script
> setkeycodes e017 128 e016 129 e018 130
> end script
>
> After rebooting, I found that 'xev -event keyboard' now reports that
> Fn-F4, Fn-F5 and Fn-F12 are mapped to X keysyms Cancel, Redo and
> SunProps, so I expect that I should be able to bind those keys in
> lubuntu-rc.xml to Andre's suggested commands.
>
> On 4/29/2014 6:08 PM, John Hupp wrote:
>> The next problem is that Fn-F4 and Fn-F5 don't generate any keysyms,
>> so they can't be bound to the commands suggested by Andre.
>>
>> To deal with that, I've been following the In-Depth Instructions in
>> https://help.ubuntu.com/community/MultimediaKeys, and I have
>> identified the scancodes and picked a couple unassigned kernel
>> keycodes, but that article is old, and writing setkeycodes commands
>> into /etc/init.d/bootmisc.sh or /etc/rc.local seems deprecated (those
>> files don't exist).
>>
>> Is there more current documentation for this task? Is ibus-setup
>> supposed to handle this job somehow under Lubuntu 14.04? Or is there
>> another place preferred for auto-starting setkeycodes commands?
>>
>> On 4/29/2014 3:54 PM, John Hupp wrote:
>>> Thanks, Andre, for all of those great tips.
>>>
>>> I've been looking at the Exec lines in several versions of
>>> ~/.config/autostart/LXRandR-autostart.desktop (created when one
>>> clicks Save in LXRandR) and thinking about how I could create
>>> something that would cause Fn-F7 to toggle through the LVDS, VGA and
>>> S-Video outputs, but your approach -- simply binding to LXRandR --
>>> is a MUCH better idea!
>>>
>>> And if I wanted to add the ability to extend the desktop instead of
>>> mirroring it, I could install arandr and just bind to that instead.
>>>
>>> On 4/29/2014 3:18 PM, Andre Rodovalho wrote:
>>>> I tested here, and it works:
>>>> http://askubuntu.com/questions/181390/what-is-the-command-for-sleep-hibernate
>>>>
>>>> |*pm-suspend* and**||*pm-hibernate*|
>>>>
>>>>
>>>> 2014-04-29 16:13 GMT-03:00 Andre Rodovalho
>>>> <andre.rodovalho at gmail.com <mailto:andre.rodovalho at gmail.com>>:
>>>>
>>>> On lubuntu-rc.xml I do:
>>>>
>>>> <keybind key="XF86Display">
>>>> <action name="Execute">
>>>> <command>lxrandr</command>
>>>> </action>
>>>> </keybind>
>>>>
>>>> *lxrandr* deals with additional monitors, you just enable them
>>>> an apply.
>>>>
>>>> I'm not sure what commands you can execute to sleep and
>>>> hibernate, but you can control radio with *rfkill*. I'm not
>>>> sure if those commands really require root access, but on that
>>>> case you can do a: *gksu command*
>>>> *
>>>> *
>>>> Hope that helps! To test the shortcuts without restarting all
>>>> the system you can restart only openbox: *openbox --restart*
>>>>
>>>>
>>>> 2014-04-28 22:03 GMT-03:00 Israel <israeldahl at gmail.com
>>>> <mailto:israeldahl at gmail.com>>:
>>>>
>>>> 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.
>>>> >
>>>> >
>>>> Hi,
>>>>
>>>> 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
>>>> <command>
>>>> /bin/bash /path/to/scriptname.sh
>>>> </command>
>>>> while scriptname.sh is whatever you saved the setup as with
>>>> the correct
>>>> path.
>>>>
>>>> arandr is a front-end for xrandr. So the script is
>>>> actually using
>>>> xrandr to modify your display settings.
>>>>
>>>> I hope this helps.
>>>>
>>>> --
>>>> Regards
>>>>
>>>>
>>>> --
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>>>> Lubuntu-users at lists.ubuntu.com
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>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>
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