One thing that bother me for a long time with PCLinuxOS was brightness issue with my Nvidia Geforce Go 7400 card. I could not adjust the brightness with Fn+F8/F9. Same laptop, worked without any problem with my previews distro(s). I think they solved it by kernel patching or the nvidia blob/xorg.conf is different. So I started to read about brightness problem in PCLinuxOS with Nvidia and I tried out all of them. Both modified xorg.conf and kernel parameter. Nothing really helped me. I will bug report it, before that I can give temporary solution for all of you suffering from same issue. Hopefully Texstar & Co will fix this in the feature. This is how I did:
1. Open Synaptic and install nvclock. Do not forget to update before any installation.
2. Now open terminal and type: nvclock -S 50 (percentages of the brightness). If that worked, change back to full brightness. Instead of 50, type 100.
3. If we want brightness up/down to work with Fn+F8/F8 (maybe different combination for other laptops) we need to modified keyboard/hotkey settings. This is how:
a) Press “Configur your Desktop” → “Shortcuts and gesture” → “Your own webbshourtcuts”.
b) Right click and choose “New Group” and name it something. Example: KDE-demon.
c) Inside the new group, right click, choose “Global hotkeys” and finally “Command/webbpages”.
d) Name it brightness up. Remember do the same procedure for brightness down.
e) Press second tab and press now: Fn+F8 (can be different for you) and if some warning comes up press yes/okey.
f) Go to third tab and type: nvclock -f -S +10 (When pressing brightness up (Fn+F8), it will increase with 10 %). Feel free to change 10 to another number.
G) Don’t forget to do same thing for brightness down (Fn+F9). Only difference:
nvclock -f -S -10
I am running PCLinuxOS not in English, so I am not hundred about the names.