I don't care how you came to replace `0` with `o`, but I suggest not doing this when talking about technical matter.
– LiveWireBTAug 14 '14 at 05:36
I have the same problem [Asked here](http://askubuntu.com/questions/475711/turn-off-keyboard-back-light-sony-vaio-svf1521dcxw) but I could not fix that.
– αғsнιηAug 14 '14 at 06:26