Brightness keys don't work Daru2

**elusivespoon** · September 5th, 2008

Using Fn-F4 or Fn-F5 doesn't change my brightness. I've tried a couple of fixes from the forums, none of which have worked on my Daru2. (One was adding "blacklist video" to /etc/modprobe.d/blacklist, and the other changing the scripts in /etc/modprobe.d/blacklist). Any suggestions?

**greg_g** · September 6th, 2008

Do you remember any changes that happened to the sytem relatively soon before it stopped working? I'm assuming it was working at some point as mine works and hasn't ever had problems.

**elusivespoon** · September 6th, 2008

Yes. I upgraded to Hardy.

**greg_g** · September 6th, 2008

Have you installed and run the System76 Driver?
http://knowledge76.com/index.php/System76_Driver

**elusivespoon** · September 7th, 2008

Well, when I run the System76 driver it says version 2.2.1 in 'about', but in Synaptic it says it's version 2.2.2. So I might not have the latest version.

**AusIV4** · September 7th, 2008

On my Gazelle, I had a similar issue where any ACPI controlled keys would stop working after resuming from suspend. Does this happen after fresh boots, or just after suspending?

**elusivespoon** · September 7th, 2008

Fresh boots. (At the moment you can't suspend a Daru2 with out problems).

**thomasaaron** · September 8th, 2008

elusivespoon,

If you are using the kernel option that fixes the power management on the daru2, it hoses the brightness keys.

Right now, the workaround is to put a brightness applet on one of your panels. Let me know if you need help with this.