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POHow do I light up the Caps Lock light with xset?
 

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  1. POHow do I light up the Caps Lock light with xset?
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    <p>I wrote a little fetchmail script that checks the remote server and plays an audio file when I have new mail. I also wanted to also light up one of my keyboard lights when the mail was available but I ran into a problem. I am able to light up the scroll lock light with this:</p> <pre><code>/usr/bin/xset led named "Scroll Lock" </code></pre> <p>But I can't light up the Caps Lock in the same way:</p> <pre><code>/usr/bin/xset led named "Caps Lock" </code></pre> <p>I tried specifying the key with a number (1-6) but despite changing the mysterious 'LED mask' (visible with 'xset q') I saw no change to the lights.</p> <p>Is this broken because I've mapped my Caps Lock key as another Ctrl?</p> <p>In ~/.Xmodmap I've got:</p> <pre><code>keycode 66 = Control_L clear Lock add Control = Control_L </code></pre> <p>I don't want to toggle caps lock, just the light. Is there a way to do this?</p> <h2>Further Explanation</h2> <p>This is on a x86 kubuntu lucid machine but I will migrate to debian later. I'm running the script as a unprivileged user in a python daemon. Running the same script as root won't work because fetchmail is configured for myself as a user. And finally, this is all run in a tmux session.</p> <p>When I began this process I read about setleds but it seems to be restricted to terminals in non x sessions. </p> <p>Logging in as root and running 'setleds -D +caps &lt; /dev/tty7' works but running 'sudo setleds -D +caps &lt; /dev/tty7' gives me a permission denied error.</p> <p>The xset command seems perfect for my application, it just refuses to change the Caps Lock light.</p>
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    1. CODescribe your configuration: OS, machine, etc.
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      1. USFoo Bah
    2. COWell, my caps lock is still caps lock, and running `xset led on` or `xset -led on` doesn't turn it on, even though the documentation says it should turn on all LEDs. So we can probably rule key remapping out.
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    3. COYou're sudo command is failing because you are not enclosing the shell redirect with the sudo. This will work... $ sudo sh -c 'setleds -D +caps < /dev/tty7'
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      1. USJohn Eikenberry
 

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