linux newbie needs advice

hi there =)

i just migrated from windows (2000) to linux (suse 8.2).
after all im very satisfied with everything expect for one thing:

linux cant manage to turn of the tft (in fact, it doesnt send any
signal to it any more, so its black, _but_ it does not turn off
the back light). this is really anoying as the computer is running
24h per day.

as im a complete linux newbie i really dont know where to start =(

im thinking bout closing the panel over night, but am not sure,
as it is then bout 2 inches above the cpu (celeron650, cpu usage
at night +-15%). how "hot" may a tft screen become?

thx for any advice
tobi

ps: my laptop is a sony vaio pcg-qr10


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