Re: max PWM is zero

On Sat, 19 Nov 2011 11:26:07 +0000 (Local time zone must be set--see zic manual page), Marcos Paulo de Souza marcos.mage@gmail.com wrote:

So, anybody gets the same message?

I'm trying the 3.2-rc2 and it gives the same message.

Again, if you need someone to make tests, or test some patches, I'm able to do this.

Is your machine even using the intel backlight device? You can test this by:

# cd /sys/class/backlight/intel_backlight

Then look at 'max_brightness' and try echoing a range of numbers from 0 to max_brightness into the brightness file and see if it changes the backlight.

It's more than possible that your machine is simply using some other hardware to drive the backlight and that the integrated backlight controller is simply disabled.