I have an issue where by backlight on a BitsyX is being turned on during suspend mode. Our code is setting the pwm to 0 then setting the backlightstate to 0. I have check our code and in no other place are we turning the backlight back on. I have also looked at registry settings, and no matter what I do, the back light comes back on at a low level pwm in suspend mode. This gives a dark grey looking screen.
Thanks for your note. Can you let us know what operating system and build you're using? Details about what display and backlight inverter you're using will help, too.
If you'd like, you can email us directly with the details and we can help you get to the bottom of it.