[Bug 514477] Re: [LUCID] Brightness fn keys have no functionality (Toshiba laptops)

[Unsk1ll3d]

Haha, I solved the Bug!

The ACPI key-scripts seem to echo 0-100 to the following location:
 /proc/acpi/video/GFX0/LCD/brightness

...but that is false! The graphics card on my compaq615 is mounted to
/proc/acpi/video/IGFX

Enter this to get a description which kind of values are allowed by the driver:
cat /proc/acpi/video/IGFX/LCD/brightness

Create a test script and test it via sudo:

#!/bin/bash
echo 100 > /proc/acpi/video/IGFX/LCD/brightness

Now I've got my full backlight again =)
If you want to change the backlight of an external monitor, just...
ls -l /proc/acpi/video/IGFX
...to see the "available" Monitors (connectors) of your graphics card.

Cheers!
Chris

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[LUCID] Brightness fn keys have no functionality (Toshiba laptops)
https://bugs.launchpad.net/bugs/514477
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