1976999 - When I use fullscreen mode in Firefox, I can see my desktop on the left and top edges.

Status: RESOLVED DUPLICATE of bug 1968382

(Core :: Widget: Win32, defect)

Description

[Jean Carlo]

Attachment: print.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0

Steps to reproduce:

Open Firefox.
Go to YouTube or any video streaming website.
Play a video and enter fullscreen mode (press F or click the fullscreen button).

Actual results:

When the video enters fullscreen, there is a ~3mm border on the top and left sides where my desktop wallpaper is visible. It breaks the fullscreen experience.

Expected results:

The video should occupy the entire screen without any visible borders or parts of the desktop showing.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Jim Mathies [:jimm]]

Fullscreen window coverage - moving to widget. Might be front-end as well, not sure.

Comment 3

[David Parks [:handyman]]

Hi Jean Carlo, thanks for the report! This looks like bug 1968382 to me. Do you know if you have set the layers.acceleration.disabled preference? We can determine this with your about:support data. Can you visit about:support in the browser and post the contents in a comment here or email them to me? There may be other preferences or extensions, or your graphics configuration may not be accelerated, etc, that are interfering as well. I'll be able to see some of that in your support data.

Also, you can check the layers.acceleration.disabled preference manually by visiting about:config, accepting the warning, and typing layers.acceleration.disabled in the search box. If it is set to true, you can try setting it to false and restarting.

Bug 1968382 also mentions trying troubleshooting mode, which you should try if you can't fix it by changing preferences, since that would mean this is a different problem.