No brightness adjustment on samsun n210 (Intel GMA 3150)

**kgas** · March 4th, 2011

check the samsung tools

**minj** · March 26th, 2011

Originally Posted by MASEngr

Awesome, awesome, awesome! Fred's post gives brightness control to the NF210, the new dual-core one. It also adds all Fn key functions!

This fix adds all FN keys to Ubuntu and allows for release action, meaning the keyboard will no longer stay stuck. It works on UNR 10.04 and 10.10. You must reboot after editing the configuration lines.

Keys that work are:
Sleep
Battery Life
Webcam toggle
Backlight toggle
Mute
Fan mode
Wifi antenna toggle
Touchpad toggle
Number Lock
Sound up / down
brightness up / down
home

You will have to add:
|*NF210*|

into the lines of models in
/lib/udev/rules.d/95-keyboard-force-release.rules

and then add the line:
ENV{DMI_VENDOR}=="[sS][aA][mM][sS][uU][nN][gG]*", ATTR{[dmi/id]product_name}=="NF210", RUN+="keymap $name samsung-nf210"

(Copy and paste the line above it, then just change the model to NF210)

into /lib/udev/rules.d/95-keymap.rules

This does not yet fix the network resume after sleep, and no, turning off wireless with Fn-F9 doesn't do it.

Awesome you guys! I have Ubuntu 10.10 on Samsung NF310. Samsung-tools worked. Force-release worked. Keymap didn't so I added "acpi_backlight=vendor" to GRUB config (http://www.voria.org/forum/viewtopic.php?f=3&t=625) and vualia!

EDIT: this introduced the screen flickering problem but http://www.voria.org/forum/viewtopic.php?p=4750#p4750 solved it.

Although after some fiddling around with power state, lid and suspend/hibernate cycles I managed to make plugging cable out cause 'closed lid' action, which is very annoying if it is set to suspend. After a proper reboot the glitch didn't repeat itself though.

**EverRoyalt** · April 7th, 2011

Originally Posted by Fred Ora

Here's another way for those still searching. All of the setpci answers say use at your own risk, I'm not sure what the danger is, but after much experimenting I got mine working this way without that setpci script. I have a N150, but it should be the same.

Here's what I did:

in synaptic package manager go to settings, go to settings>repositories and chose other software tab.
Add the following repository: ppa:voria/ppa
click reload on the main package manager screen then search for samsung
check the boxes by samsung-tools AND samsung-backlight
click apply and load the packages. close package manager and reboot

in the terminal run:
sudo gedit /lib/udev/rules.d/95-keyboard-force-release.rules
in the samsung section you will see a line with *N130*|*N140* etc. add |*N150* there
also do the same for:
sudo gedit /lib/udev/rules.d/95-keymap.rules

substitute your model for N150 above if it isnt already there.

The first part loads the samsung tools and backlight utility. this will also get some of your other function keys working. you can see the mappings in system>samsung tools preferences.
The second part gets the mappings working for the fn-up and fn-down keys. it also keeps the fn-keys from going crazy by forcing them to release after being pressed.

Hope this helps!

(I am newbie btw)
Hi,
I got the the bit when you eneter "sudo gedit /lib/udev/rules.d/95-keyboard-force-release.rules" in to Terminal but when the textdoc opens there is nothing inside of it, it is just blank and i am useing the root account. Any idea what i have done wronge?

**Peter-E** · April 24th, 2011

I have a N150, but it should be the same.

On my N210 I tried all above. Most of the Fn keys work except the backlight. I got this working on an N150 bot not on the N210 unfortunately. In the Grub menu it does work but it did that "out of the box" As soon as Maverick launches it's over. Anyone who can confirm that the backlight setting actually works on a N210?

Thanks,
Peter

And... since installing the Natty upgrade it works. Whether this is due to the installs and settings I did previously or just that Natty is able to do this out of the box I don't know... Case closed for me.
Cheers,
Peter