Getting special keys to work

Andre Rodovalho andre.rodovalho at gmail.com
Wed Apr 30 20:55:32 UTC 2014


I know *lxsession-logout* gives us that logout window which hibernate,
suspend and others are available... I tried to insert some commands but I
had no luck. Maybe you can search this lxssession-logout documentation or
it's source code...

*lxsession-default quit* triggers to lxsession-logout...


2014-04-30 17:11 GMT-03:00 John Hupp <lubuntu at prpcompany.com>:

>  One problem solved: If I use "nmcli nm wifi on" and "nmcli nm wifi off"
> instead of the rfkill commands, this toggles the wifi radio without root
> permissions.
>
> Now if I could find some suspend/standby and hibernate commands that don't
> require root permission, this job would be done!
>
>
> On 4/30/2014 3:30 PM, John Hupp wrote:
>
> 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>:
>
>> 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>:
>>
>>  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
>>>
>>>
>>> --
>>> Lubuntu-users mailing list
>>> Lubuntu-users at lists.ubuntu.com
>>> Modify settings or unsubscribe at:
>>> https://lists.ubuntu.com/mailman/listinfo/lubuntu-users
>>>
>>
>>
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