Okay, so the printer problem solved. Now, I have another problem. The brightness problem.
Normally, by pressing F11 and F12 by default, it should increase or decrease the brightness. But, nothing is happening when I press the F11 (decrease brightness), and F12(Increase brightness). Also, I can't find any brightness settings, the only thing i found is backlight only (idk, what that is, i tried messing up with it and it seems nothing is happening to the desktop).
F1 (No sound) - works
F2 (- sound) - works
F3 (+ sound) - works
F4 (backward) - works, maybe
F5 (play pause) - works, maybe..because it opens rythmbox when i press it.
F6 (forward) - works, maybe
F8 (change display) - it works but i rarely use this
F9 (search files) - works, but i use other search more often
F11 (-brightness) - not working
F12 (+brightness) - not working
PrtScr (screenshot) - works
Also, as i mentioned in earlier post, Elive lacks of indicator (for sound or maybe brightness too), it should show the user some icon or bars if the sound is increasing/decreasing. or the brightness is at the lowest or highest setting.
As for brightness, I tried to google it on how to set the brightness thru terminal, but it seems I got some dead end. from what i see from the tutorial, it should return something like VGA1 or something like that.
xrandr | grep " connected" | cut -f -d " "
xrandr: Failed to get size of gamma for output default
cut: invalid byte or field list
Try `cut --help' for more information.