Linux sucks: Xubuntu 14.04 on Asus G55VW

I would like to install Xubuntu to my notebook (G55VW). The most of things works fine, except FN-keys (FN-F4...FN-F6, yeah the LCD&keyboard brightness controls). I read many forums but most of way didn't get solution. I tried most of and here is my version:

1. get and install
https://github.com/guillaumezin/nvidiabl

Install:
sudo make  dkms-install

To remove:
sudo make dkms-remove
2. Update grub
vim /etc/defaults/grub
add "acpi_backlight=vendor" to cmdline
sudo update-grub2 && sudo reboot

3. reboot
Set brightness to the half of max.br:
echo -n 50 | sudo tee /sys/class/backlight/nvidia_backlight/brightness

4. Disable using of the profiles in nvidia-settings.


I had issue with Wireless:

sudo vim /etc/modprobe.d/iwlwifi.conf

options iwlwifi 11n_disable=1