Nvidia drivers cause buzz that nouveau do not

[GoogleCodeExporter]

What steps will reproduce the problem?
1.Install nouveua drivers. Change brightness, do not hear a buzz
2.Uninstall nouveau. 
3.Install nvidia drivers from nvidia.com
4.Change brightness, hear screen buzz.

What is the expected output? What do you see instead?

What version of the product are you using? On what operating system?
Arch Linux 64-bit
Kernel 2.6.36/37/38/39
Kernel 3.0
Drivers:
260.19.44
270.41.06
275.21

Please provide any additional information below.
http://nvidia-submit.custhelp.com/app/account/questions/detail/i_id/343407

Original issue reported on code.google.com by geeksano...@gmail.com on 28 Jul 2011 at 11:28

[Ksanto92]

Yes. I have a Sony Vaio F11 too and have the same problem. Even had to reinstall after some switch problems of drivers. And it s not the Samsung SSD. That makes some noise too, but it's different. Running Ubuntu 15.04 with nouveau happily )

[Ksanto92]

tvogel. If you read this. I have found a temporary solution to this. http://ubuntuhandbook.org/index.php/2014/04/save-screen-brightness-settings-in-ubuntu-14-04/

In Terminal: ("su" for superuser without the "" and then a password or just "sudo" ) gedit /sys/class/backlight/acpi_video0/max_brightness >> look at your max Brightness than>> sudo -i

gedit /etc/rc.local

and write this right over exit0: echo 0 > /sys/class/backlight/acpi_video0/brightness I have put echo 0 > /sys/class/backlight/acpi_video0/actual_brightness there as well, to be save. Change the 0 "echo 0" to the value you want. Than save the file. But you have to restart your pc everytime you want to change the brightness. Haven´t found another solution. Loging out doesn´t work. Note that your path can be a little different, like for intel_GpU´s.

And there might be another thing you have to switch off, but only if this doesn´t work: by changing the file from xorg.conf to xorg.conf.backup

Another fix if the above fails: >>>> This solution doesn´t work. Checked it. Buzz is still there!!!

Run nVidia X Server settings which you can find in the Application menu.

Select X Server Display configuration and chose the save to x configuration file option. This will build file xorg.conf. Close Nvidia X Server settings.

sudo gedit /etc/X11/xorg.conf in terminal.

Find this section:

Section "Device"
Identifier     "Device0"
Driver         "nvidia"
VendorName     "NVIDIA Corporation"
BoardName      "GeForce GT 540M"
EndSection 

And change it to something like this:

Section "Device"
Identifier     "Device0"
Driver         "nvidia"
VendorName     "NVIDIA Corporation"
BoardName      "GeForce GT 540M"
Option "RegistryDwords" "EnableBrightnessControl=1"
EndSection

Reboot.

[Ksanto92]

The last part is from this site: http://askubuntu.com/questions/266601/sony-vaio-brightness-settings-not-changing and this one: http://askubuntu.com/questions/472850/brightness-control-in-ubuntu-14-04-on-sony-vaio

But as I said. It doesn´t work for me. I couldn´t controll the brightness with the nvidia driver at all and tried this. Got the freaking out buzz problem and switched bach to "nouveau". Have a Geforce 330M installed by the way...

Good Luck^^