I installed ClouldReady on my Toshiba Portege R500 laptop. The OS works nicely except the LCD backlight turns off. During the first boot up the light was on. After powering down the light turns off when the sign in window appears. I installed the OS twice and the result is the same. Can't use the computer because I can't see anything, i saw a similar post on this site and tried sudo tee/sys/class/backlight/toshiba/ etc. etc. but it didn't work.
When I boot from USB stick the light is on all the time. What is going on and how to fix it?
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