This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

My Computer screen dims dark while watching Amazon Prime movies on Firefox.

more options

Dear Firefox,

My Computer screen dims dark while watching Amazon Prime movies on Firefox. At first, I thought something was wrong with my computer, and after a series of attempts to fix the problem, I soon gave up and tried watching the Video on Safari and then Google; to my surprise, watching the Video on both Safari and Google my screen held steady and never Dimmed?

Dear Firefox, My Computer screen dims dark while watching Amazon Prime movies on Firefox. At first, I thought something was wrong with my computer, and after a series of attempts to fix the problem, I soon gave up and tried watching the Video on Safari and then Google; to my surprise, watching the Video on both Safari and Google my screen held steady and never Dimmed?

All Replies (2)

more options

Some websites have a setting to darken the display during the playing of videos.

more options

I have same problem. It's a new issue; didn't happen last 2 years on FireFox, and now it does. Using Safari fixes it.