I've just installed Ubuntu 12.10 on my Samsung 900X4C. However, I can't get the keyboard backlights to work.
I added the keymaps as per community docs – Samsung Series 9 (section Function Keys). But regardless of pressing Fn+F9 or F10 (backlight decrease/increase), I get:
- No lights in keyboard
- Toggler in top right corner always pops-up as maxed out (i.e., "full light")
How can you fix the keyboard backlight? The Fan button (Fn+F11) doesn't work either, if you also know about that one it would be great.
Best Answer
I bought the exact same model (900X4C) a couple of days ago and I've successfully seen the F9/F10 keys work, and I didn't even had to install the Voria /
samsung-tools
package either - I just fiddled around with the/lib/udev/keymaps/samsung-other
file and the corresponding force-release file.Unfortunately, I messed up the install process (I wasn't running Ubuntu in UEFI mode and I had swap) and I decided to reinstall, since then I was unable to replicate the working keyboard backlight.
I just felt like that was something that may help others more knowledgeable to find a solution.
Here are a couple of (perhaps useful) resources I came across:
Also, a couple of experiments and results...
Doing:
Returns:
After a fresh install of Ubuntu 13.04 and update this is what I get:
I also managed to get the correct keymap codes for this exact model by doing
/lib/udev/keymap -i input/event3
and gathering the output when I pressed a FN + Fx key combination:You can use
showkey
to get the decimal code representation for the combination pressed.Remember to call the following commands afterwards:
I'm sort of giving up on this for now but if anyone gets it right, let me know!
PS: While experimenting, I just noticed 2 interesting things:
The point #2 makes me suspect the keys are not being released.
The above was taken from
/lib/udev/rules.d/95-keyboard-force-release.rules
.