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I have just installed Awesome WM and I have no options to change the screen brightness, and also its shortcut doesn't working. Any one can help?

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2  
You can try xbacklight. –  Marco Feb 7 '12 at 11:16
    
I will try it, thanks :). –  Wazery Feb 8 '12 at 0:59
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4 Answers 4

in ~/.config/awesome/rc.lua

    -- Brightness

    awful.key({ }, "XF86MonBrightnessDown", function ()
        awful.util.spawn("xbacklight -dec 15") end),
    awful.key({ }, "XF86MonBrightnessUp", function ()
        awful.util.spawn("xbacklight -inc 15") end),
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...in the globalkeys = awful.util.table.join( section, more precisely. –  Nikana Reklawyks Sep 21 '13 at 5:03
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1) Install xbacklight:

sudo apt-get install xbacklight

2) Test it in console:

xbacklight -inc 10
xbacklight -dec 10

3) Add hotkeys to your awesome config ~/.config/awesome/rc.lua

Insert inside [globalkeys = awful.util.table.join] section the following text:

awful.key({ }, "XF86MonBrightnessDown", function ()
    awful.util.spawn("xbacklight -dec 15") end),
awful.key({ }, "XF86MonBrightnessUp", function ()
    awful.util.spawn("xbacklight -inc 15") end)

I use a keyboard without XF86MonBrightness* that's why I added bindings to Mod+o, Mod+p:

awful.key({ modkey,           }, "p", function ()                           
    awful.util.spawn("xbacklight -dec 15") end),                            
awful.key({ modkey,           }, "o", function ()                           
    awful.util.spawn("xbacklight -inc 15") end)                             

Hope this helps )

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One way is to load "gnome-power-manager" inside awesome, or at awesome startup: https://wiki.archlinux.org/index.php/Awesome#Transitioning_away_from_Gnome3 Hope this helps

Another option is to run awesome inside gnome, then you can just rely on the gnome controls (working fine) and networking etc is working too http://awesome.naquadah.org/wiki/Quickly_Setting_up_Awesome_with_Gnome

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I autostart xfce4-power-manager, which will let you adjust the brightness using the brightness keys, in addition to general power management, such as suspend/resume, battery notifications, etc.

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