1384844 - Firefox goes blank after mpv and ffplay fullscreen

Status: UNCONFIRMED

(Core :: Graphics, defect, P3)

Description

[magpie240]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0
Build ID: 20170727121554

Steps to reproduce:

Firefox running normally. Start watching video fullscreen in mpv or ffplay. Returned from fullscreen.


Actual results:

Firefox pages were blank. Quick vid here: https://sta.sh/071s9oq5cxv 


Expected results:

Pages should have still been visible. Disabling hardware accel seems to solve. Issue noticed in 55b12 and 56a.

Comment 1

[Alex]

I have the same problem on Gentoo with release version of firefox-55. After I start mpv I see that current tab in Mozilla flickers and goes blank in a second.
Same on closing mpv window.

Comment 2

[Alex]

The problem remains in 55.0.1

Comment 3

[Anthony Jones (:ajones, :kentuckyfriedtakahe, :k17e)]

(In reply to magpie240 from comment #0)
> Disabling hardware accel seems to solve.

This is therefore a graphics issue and likely a dupe, since HW accel isn't enabled by default.

Comment 4

[Alex]

same in 55.0.2 and 55.0.3

I've disabled "Use hardware acceleration when available" in General -> Performance settings, but it didn't help me.

Comment 5

[Milan Sreckovic [:milan] (needinfo for best results)]

Ryan, can you reproduce this?

Comment 6

[Ryan Hunt [:rhunt] (on leave until early May)]

(In reply to magpie240 from comment #0)
> User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:55.0) Gecko/20100101
> Firefox/55.0
> Build ID: 20170727121554
> 
> Steps to reproduce:
> 
> Firefox running normally. Start watching video fullscreen in mpv or ffplay.
> Returned from fullscreen.
> 
> 
> Actual results:
> 
> Firefox pages were blank. Quick vid here: https://sta.sh/071s9oq5cxv 
> 
> 
> Expected results:
> 
> Pages should have still been visible. Disabling hardware accel seems to
> solve. Issue noticed in 55b12 and 56a.

I'm not able to reproduce this. Tried to reproduce this on Arch linux with 55.0 and Nightly then watching a video in fullscreen with ffplay and then closing out of it. I attempted with and without 'layers.acceleration.force-enabled'.

I tried to view the video you linked to but it's no longer there. Could you reupload somewhere so I can see what's happening? Also it could be helpful if you posted the graphics section of about:support.

If you'd like, you can also give mozregression a try to see when this became broken. That'd also help us out. [1]

[1] http://mozilla.github.io/mozregression/

Comment 7

[Alex]

Attachment: Graphics section of about:support

I've switched to binary version (instead of using sources) of Firefox (I think it's official one) and I still have this problem.

Graphics section of about:support is attached

Comment 8

[Alex]

I've checked older and beta versions and the bug was present in 55.0b1

And since 55.x branch is buggy for me I've decided to check 56.0b10 - active tab noticeably blinks on opening/closing mpv video, but doesn't go blank in the end. 

So, kinda resolved in upcoming version.

Comment 9

[Ryan Hunt [:rhunt] (on leave until early May)]

(In reply to Alex from comment #8)
> I've checked older and beta versions and the bug was present in 55.0b1
> 
> And since 55.x branch is buggy for me I've decided to check 56.0b10 - active
> tab noticeably blinks on opening/closing mpv video, but doesn't go blank in
> the end. 
> 
> So, kinda resolved in upcoming version.

My guess then is that this is a dupe of bug 1377950, which is resolved in 56 (soon to be released).

The fix for it will still cause content to flash white for a second, which you noticed. That's bug 1396418.

I'll mark this resolved if the reporter can confirm it's fixed in the current beta of 56.

Comment 10

[coolmirza143]

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