LCD Backlight does not turn off when laptop closed

[Wes Garner]

HP dv2815us does not turn the LCD backlight off when the lid is closed
Running xset dpms force off does work, but nothing happens when closing the lid

[Krzysztof Klimonda (kklimonda)]

Check if you have right settings in System->Preferences->Power Management - Maybe "When Laptop lid is closed" is set to "Do nothing"?

[Wes Garner (wesgarner)]

Nope I had it set to Blank Screen, also just checked Suspend and it doesn't work either.

[Jānis Kangarooo (kangarooo)]

Everything worked fine with lid closind and light offing
But now i wandet to check why sometimes when lid is closed after longer time light doesnt go On.
So now i also tryd changing Power settings. Put do nothing when lid closed and the same when on baterys and uncheked in batery state Reduce backlight brightnes.
Then tryd to close the lid. lights did stay on.. All ok..
Then tryd putting it back to blank screen on both elecrit states But now light needed to go off but it didnt.
Il now also try wait 2min to see if lights go off and on after putting to sleep screen. Maybe thats the problem.. also..