1269206 - Black screen flashes after minimizing and restoring the browser. (Xperia c3 device )

Status: RESOLVED INCOMPLETE

(Firefox for Android Graveyard :: Toolbar, defect)

Description

[Swapnil]

User Agent: Mozilla/5.0 (Linux; Android 5.1.1; D2502 Build/19.4.A.0.182) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.83 Mobile Safari/537.36
Firefox for Android

Steps to reproduce:

1.Launch mozilla. 
2.Open multiple tabs by tapping on '+' button. (approximately 60)
3.Now open Google search page. 
4.Minimize and restore the browser. 
5.Observe that black screen flashes. 


Actual results:

Black screen flashes after minimizing and restoring the browser. 


Expected results:

Page should be clearly visible to the user without having any black screen issues.

Comment 1

[Swapnil]

Please let me know if you require any more  regarding above issue.

Comment 2

[Swapnil]

@YF will you fix this issue?

Comment 3

[Jeff Muizelaar [:jrmuizel]]

Jamie, can you reproduce this?

Comment 4

[Swapnil]

@jeff check this issue with 2G/3G network.

Comment 5

[Jamie Nicol [:jnicol]]

Yes I can reproduce some of the time, I'll have a look into it.

Comment 6

[Jamie Nicol [:jnicol]]

I am fairly certain this is not a graphics problem. We correctly composite immediately when SurfaceListener.surfaceChanged() is called in LayerView.java. Which happens when the activity is resumed, as expected.

The problem, however, appears to be that there is sometimes a delay between the user clicking to restore the app and the activity actually being resumed, during which time the app is black. I've not worked out why this is, or exactly how to reproduce 100% of the time. But having many tabs open makes it more likely, as does running a debug build.

Interestingly this line appears in the logcat immediately before the activity is resumed:

> 05-17 10:26:00.370   900  2982 I ActivityManager: Activity reported stop, but no longer stopping: ActivityRecord{ace62f6 u0 org.mozilla.fennec_jamie/org.mozilla.gecko.BrowserApp t70}

Snorp, is there somebody in the mobile team who would be able to look into this?

Comment 7

[James Willcox (:snorp) ([e-mail]) (he/him)]

Yeah, we can look at it. My gut feeling is that we are doing some work in Activity.onPause() that is still ongoing if you quickly try to resume, hence the delay. Dylan is messing with surface lifetime stuff right now, so I'll assign this to him.

Comment 8

[miralobontiu]

Hi,

I was not able to reproduce the issue.

Tested with:
Browser / Version: Firefox Mobile Nightly 63.0a1 (2018-08-07)
Operating System: Sony Xperia Z5 Premium (Android 6.0.1)

Could you download the latest Nightly and retry?

Thank you!

Comment 9

[Stefan Deiac]

Due to the lack of additional info, I'll close this issue as Incomplete. If someone can provide more information please feel free to reopen the issue, thanks.