# Samsung R430

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This article or section does not follow the Laptop page guidelines.

Reason: Needs more entries (and IDs) in hardware table, lacks firmware and function keys section. (Discuss in Talk:Samsung R430#)

Hardware | PCI/USB ID | Working?
--- | --- | ---
Touchpad |  | Partial
Keyboard |  | Yes
Video |  | Yes
Wireless |  | Yes

## Touchpad

Activating two-finger scroll does not seem to work.

## Screen brightness

To enable screen brightness, you need to install and activate the kernel module nvidia-bl-dkmsAUR from the AUR. It needs some options tweaked however, so edit `/etc/modprobe.d/modprobe.conf` to contain:

    options nvidia-bl max_level=131071 shift=9

In different models or with different video cards this might not work

max_level is a number one less than a power of 2. to find the ideal one for your laptop just load it with a value (the default is 2047), like

     # modprobe nvidia-bl max_level=level

and, if it is not bright enough, try with the next number, not without unloading the module first:

     # rmmod nvidia-bl

The shift parameter bit-shifts the brightness values, as to make it a sane number. The recommended is to make it so max_level is 256, so it can be calculated by adding one to the max_value (getting a power of two), then calculating the base 2 logarithm of that, and subtracting 8 from the result.

finally, you have to load the module, to do this, just issue

     # modprobe nvidia-bl

To load it automatically at boot, add a `nvidia-bl.conf` file as described in Kernel modules#Automatic module loading with systemd.

The brightness level can then be set by writing the desired value to `/sys/class/backlight/nvidia_backlight/brightness`

## Enable and disable features

To make managing the features of the notebook easier, you can install samsung-toolsAUR. Just install it and follow the instructions given by the install script.

Category:

- Samsung

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