1972448 - fullscreen bug on dual monitor

Status: RESOLVED DUPLICATE of bug 1968382

(Core :: Widget: Win32, defect)

Description

[raphael andrade]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0

Steps to reproduce:

step 1:
open a youtube video on your main monitor

step 2:
notice the left edge of the monitor

step 3:
observe remnants of the background application appearing behind mozilla

step 4:
in this case, the background app is discord

Actual results:

a stripe from a discord area appears, as if the video weren't in fullscreen

Expected results:

the video was supposed to be in fullscreen

Comment 1

[BugBot [:suhaib / :marco]]

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

[BugBot [:suhaib / :marco]]

The severity field is not set for this bug.
:jimm, could you have a look please?

For more information, please visit BugBot documentation.

Comment 3

[Jim Mathies [:jimm]]

Can you post a screen shot of what you're seeing here as an attachment? I've seen a couple fullscreen coverage bugs lately, probably related to the cause there but this is not a media playback issue.

Related - https://bugzilla.mozilla.org/show_bug.cgi?id=1965699

Comment 4

[David Parks [:handyman]]

This also looks like bug 1968382. raphael andrade, do you have graphics hardware acceleration disabled? If not, or if you don't know, along with the screenshot, can you post (or email) your about:support contents here, which we can use to check that?

Comment 5

[raphael andrade]

(In reply to David Parks [:handyman] from comment #4)

This also looks like bug 1968382. raphael andrade, do you have graphics hardware acceleration disabled? If not, or if you don't know, along with the screenshot, can you post (or email) your about:support contents here, which we can use to check that?

i believe that when i reported the bug, i wasn't using hardware acceleration. i disabled it here to test, and it turned out like this:

here's a screenshot of my screen with hardware acceleration disabled.

Comment 6

[David Parks [:handyman]]

Yep, that sounds like bug 1968382.