> Is probably, that not alls are correctly detected with this method,   
> but I thing that the whitelist can decrease more trying to reduce to  
>  graphical card detected, and adding support for laptops that don't   
> work with this method.
> Reducing to a list that have this characteristics:
> - It use nvidia8,nvidia9 or quadro for nvclock
> - It's a laptop with graphic card manufactured by "nVidia   
> Corporation", (implemente with this or video bios, ... I don't know   
> the better way for this, but this is the important)
> For this moment, we now that it's really, you can confirm with the   
> list on the description. That confirm that don't need a whitelist   
> with ALL laptops with this graphic cards.
>

Only a small fraction of the nvidia based laptops works using this  
method. I think that less than 50% of the laptops use this method  
likely even less lets say 25% or so. For instance no Dell, Lenovo and  
Acer laptops have been reported to use this method. Further the HP  
models which use it upto now are some business orientated models and I  
doubt the the normal consumer line uses this method. On a lot of  
nvidia laptops the buttons actually work fine by default. For that  
reason I want a whitelist for or else a good detection method. I might  
have found something in the video bios but I don't have time to  
implement all the code for it. What I saw in the nouveau bios code is  
that the lvds table contains some pwm fields which are likely meant  
for smartdimmer.

Roderick

-- 
No Screen Backlight Control; Notebooks (Vaio, Macbook, HP/Compaq, Samsung, 
Zepto et al.)  with Nvidia Geforce8/Geforce9/Quadro series graphics
https://bugs.launchpad.net/bugs/95444
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