On 04/09/12 6:09 PM, Jeff Cen wrote: > My machine is a box sitting away from me and doesn't have a ambient light sensor. > > > Can the problem be gnome or the LCD monitor related? I'm not sure what 'a box sitting away from me' means. the light sensor would be a feature of the LCD monitor, not the computer system (unless youre talking about a laptop where its all integrated). shine a bright flashlight at and around the monitor, including down from the top, does the screen brightness change? -- john r pierce N 37, W 122 santa cruz ca mid-left coast