624254 - persistent checkerboarding when panning down on simple news page.

Status: RESOLVED FIXED

(Firefox for Android Graveyard :: Panning/Zooming, defect)

Description

[Oleg Romashin (:romaxa)]

Very annoying that Mobile Firefox showing checkerboard (white/non-rendered area) for every not super fast pan event.

Tested URL on different devices different browsers.
Fennec: White area visible always on GalaxyTab, Maemo Portrait/Landscape mode, every single scroll motion does kinetic scrolling with bunch of white area
Opera: On Galaxy tab in portrait mode able to scroll almost whole page in portrait mode without checkerboard.
Android Browser: render in runtime, On galaxy tab slow but no checkerboard... (same with normal firefox)
iPhone Browser: kinetic motion is not super long, but no checkerboard visible for single scroll motion in portrait and in landscape mode.
Microb N900: Able to scroll URL in portrait and landscape mode without white area visible.

I think we should do something for fixing this problem before shipping first fennec version...

Comment 1

[Doug Turner (:dougt)]

I think this might be a dup.

Comment 2

[Chris Jones [:cjones] inactive; ni?/f?/r? if you need me]

Setting dep to track test-case here.

Comment 3

[Cristian Nicolae (:xti)]

TC https://litmus.mozilla.org/show_test.cgi?id=12200 fails due to this bug.

Comment 4

[Matt Brubeck (:mbrubeck)]

(In reply to comment #3)
> TC https://litmus.mozilla.org/show_test.cgi?id=12200 fails due to this bug.

I don't see how this bug impacts that test case.  Can you explain?

Comment 5

[Cristian Nicolae (:xti)]

(In reply to comment #4)
> (In reply to comment #3)
> > TC https://litmus.mozilla.org/show_test.cgi?id=12200 fails due to this bug.
> 
> I don't see how this bug impacts that test case.  Can you explain?

For every second refresh on the bottom of the page there will be persistent checkerboards and I think that the page about offline storage should be displayed correctly.

Comment 6

[Cristian Nicolae (:xti)]

TC https://litmus.mozilla.org/show_test.cgi?id=12155 fails due to this bug.

Comment 7

[Cristian Nicolae (:xti)]

Attachment: Screenshot

This issue occurred on the latest Nightly build while I've browsed to planet.mozilla.com

--
Build id : Mozilla/5.0 (Android;Linux armv7l;rv:8.0a2)Gecko/20110802
Firefox/8.0a2 Fennec/8.0a2
Device: HTC Desire Z
OS: Android 2.2.1

Comment 8

[Lucas Rocha (:lucasr)]

Cristian and Oleg, is this bug still happening on latest code after Ben's latest patches?

Comment 9

[Cristian Nicolae (:xti)]

(In reply to Lucas Rocha from comment #8)
> Cristian and Oleg, is this bug still happening on latest code after Ben's
> latest patches?

If I will refresh the planet.mozilla.org, a persistent checkerboard bar is displayed on the left side of the webpage. Also If I scroll up/down a little bit quicker than usual, the checkerboards will cover the entire display for 0,5s - 1s. I have the same result after I've performed a double touch scrolling action. 
If the webpage is zoomed in, when a zoom out action will be performed, the page is circled by the checkerboards for 0,5s - 1s.
However, this works better then previous versions of Fennec imo.

--
Build id : Mozilla/5.0 (Android;Linux armv7l;rv:9.0a1)Gecko/20110901
Firefox/9.0a1 Fennec/9.0a1
Device: Samsung Galaxy S
OS: Android 2.2

Comment 10

[Cristian Nicolae (:xti)]

Attachment: Screenshot - Nightly 9

Comment 11

[Gabriela [:gaby2300]]

Happens sometimes in planet.mozilla.org, but much less noticeable and fewer times. 
Build id : Mozilla/5.0 (Android;Linux armv7l;rv:9.0a2)Gecko/20111107
Firefox/9.0a2 Fennec/9.0a2
Device: Samsung Galaxy Tab 10.1
OS: Android 3.1