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Old 07-04-09, 01:33 PM   #1
LuHe
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Default Can't change the brightness with nvidia driver

Hello,
I can't change the brightness (using powerdevil, the fn-keys in the keyboard, nvclock or smartdimmer) of my notebook display if I use the nvidia driver, but it works with nv and nouveau.

My graphics card: VGA compatible controller: nVidia Corporation GeForce 9600M GT (rev a1)
I'm using Fedora 11 and the nvidia driver version 185.18.14

No error reported if I use nvclock from Fedora 11, but nothing changes (please note: if I use the SVN version I get this error: Smartdimmer is only supported on certain (HP/Samsung/Sony/Zepto) laptops using a Geforce 6200/7x00Go/8x00Go. If you want support on your laptop contact the author.):
lukas@laptop ~ $ /usr/bin/nvclock -S 100
Changing Smartdimmer level from 0% to 100%
New Smartdimmer level: 100%

Does anybody know what i should do?

Last edited by LuHe; 09-10-09 at 08:58 PM.
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Old 07-05-09, 08:03 PM   #2
LuHe
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Default Re: Can't change the brightness with nvidia driver

Does anyone have same problem I have and/or has a solution for it?
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Old 07-08-09, 11:15 AM   #3
LuHe
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Default Re: Can't change the brightness with nvidia driver

*push*
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Old 07-09-09, 12:43 PM   #4
schmirrwurst
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Default Re: Can't change the brightness with nvidia driver

We are a lot of people experiencing problems with backlight... and hoping nvidia to do something !

Coud you see if you have something in /sys/class/backlight/ :
"ls /sys/class/backlight" ?

What have you for a laptop model ?
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Old 07-09-09, 12:47 PM   #5
schmirrwurst
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Default Re: Can't change the brightness with nvidia driver

I've just found a petition to make nvidia driver opensource, in the petition, it say that one of the reason is that nvidia developper can't be contacted, and there are too many problems with the driver to that they don't manage to make it work properly... to release as opensource would boost the developpement, and we could be able to have such problems as here, corrected quickly...

http://www.petitiononline.com/nvfoss/
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Old 07-09-09, 12:49 PM   #6
LuHe
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Default Re: Can't change the brightness with nvidia driver

Quote:
Originally Posted by schmirrwurst View Post
We are a lot of people experiencing problems with backlight... and hoping nvidia to do something !
Good to know that I'm not the only one
Quote:
Originally Posted by schmirrwurst View Post
Coud you see if you have something in /sys/class/backlight/ :
"ls /sys/class/backlight" ?
No, this directory is empty
Code:
root@laptop ~  #  find /sys /proc -name "backlight"
/sys/class/backlight
root@laptop ~  #  ls /sys/class/backlight
root@laptop ~  #
Quote:
Originally Posted by schmirrwurst View Post
What have you for a laptop model ?
HP Pavilion dv7-1018eg

Thanks,
Lukas
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Old 07-09-09, 12:57 PM   #7
LuHe
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Default Re: Can't change the brightness with nvidia driver

Quote:
Originally Posted by schmirrwurst View Post
I've just found a petition to make nvidia driver opensource, in the petition, it say that one of the reason is that nvidia developper can't be contacted, and there are too many problems with the driver to that they don't manage to make it work properly... to release as opensource would boost the developpement, and we could be able to have such problems as here, corrected quickly...

http://www.petitiononline.com/nvfoss/
signed :-)
though I don't believe that they admit their mistake and go the right way.
however the nouveau driver is growing really fast (even kernel-based mode setting works), and so I'm planning to move to this open source driver if my problem won't get fixed
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Old 07-10-09, 02:07 AM   #8
polo83
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Default Re: Can't change the brightness with nvidia driver

Quote:
Originally Posted by schmirrwurst View Post
I've just found a petition to make nvidia driver opensource, in the petition, it say that one of the reason is that nvidia developper can't be contacted, and there are too many problems with the driver to that they don't manage to make it work properly... to release as opensource would boost the developpement, and we could be able to have such problems as here, corrected quickly...

http://www.petitiononline.com/nvfoss/
I agree with you. There are so many problems to a few developers...

Im gonna ask in a new post about the way to change brightness and contrast like the driver do to avoid the flickering Im suffering when I change this values many times (via a script using the command nvidia-settings) with a nvidia quadro nvs 440.
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Old 07-18-09, 10:11 PM   #9
LuHe
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Default Re: Can't change the brightness with nvidia driver

Hey come on Nvidia guys.. I really only want one simple answer...
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Old 07-20-09, 03:33 PM   #10
LuHe
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Default Re: Can't change the brightness with nvidia driver

*push*
There are many users having similar problems.. Any chance for a statement from nvidia?
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Old 08-01-09, 06:14 AM   #11
LuHe
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Default Re: Can't change the brightness with nvidia driver

I have this issue still with driver version 185.18.29
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Old 08-19-09, 01:09 AM   #12
LuHe
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Default Re: Can't change the brightness with nvidia driver

*push...*
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