I am using LM 13 XFCE on a Dell Latitude D630 notebook. I have set the display to turn off after 30 minutes and the screen saver after 10 minutes. The screen saver works fine, however, the display will not dim or turn off when plugged in.
Typically, I run BOINC at night and do not want the display lit all night. I am a novice with LM but feel the power management setting should work similar regardless of OS. Any suggestions are greatly appreciated.