Laptop LCD low-light night mode
Over recent years, more studies have been published demonstrating the detrimental effects of bright, especially blue, light on sleep patterns. Unfortunately, recent Dell laptops using LEDs are much too bright for comfortable night use even at the lowest backlight setting. Dell should ensure that their backlights can be taken down to levels that would be comfortable for use in the dark.
I'm typing this on an XPS L502x at night, and it is way too bright. It needs to be at least 50% dimmer than it is for it to be comfortable.