I have tried many things to get the keyboard backlight working on my laptop, to no avail.
lsmod shows the
sony-laptop module. When I get
sony-laptop, I see parameters
sudo modprobe -v sony-laptop kbd_backlight=1, which I saw as an answer somewhere else, but that did not work.
Note, the backlight works during boot, but turns off once Ubuntu loads.
I would forever be grateful for a solution; I'm in the dark at the moment.
EDIT: I tried
sudo cat on the
sony-laptop.ko file and it returned (among other things)
no backlight keyboard found. I'm thinking it can't find the backlight on my keyboard--not sure why.