964910 - Graphical glitches on Galaxy Tab 3

Status: RESOLVED INCOMPLETE

(Firefox for Android Graveyard :: General, defect)

Description

[Michael Comella (:mcomella) [NI reported issues only: ex-Mozilla]]

0) On a Galaxy Tab 3
1) Download an addon xpi (e.g. [1])
2) Open fennec
3) Navigate to any page that has web content or is about:home
4) Install the addon via `adb push` (I use [2])
5) Click "cancel" to cancel installing the add-on

Expected: A white page, no graphical glitches
Actual: A black page, which has graphical glitches when scrolled (seemingly due to the overscroll)

If these are the only repro steps, this is fairly minor. However, I figured it might be representative of a larger problem. I wonder if it could be because we may not be drawing a View there or something as it only repros on a certain device (graphics driver related?) and I was unable to take a screenshot of the issue (the screenshot via ddms is a white page with correct overscroll).

Galaxy Nexus and Nexus 7 do not repro.

[1]: http://people.mozilla.com/~bnicholson/bootstrapper.xpi
[2]: https://github.com/mcomella/addon-push

Comment 1

[Michael Comella (:mcomella) [NI reported issues only: ex-Mozilla]]

I noticed this may also appear during the first page load, between the time that about:home is hidden and the web content is showed.

This device seems to be running slowly at times - I wonder if we have a race that just is not visible on faster devices.

Comment 2

[Michael Comella (:mcomella) [NI reported issues only: ex-Mozilla]]

These glitches are also present when hiding the keyboard on web content.

This is version 4.2.2 - I'm going to (foolishly?) install the firmware update.

Comment 3

[Michael Comella (:mcomella) [NI reported issues only: ex-Mozilla]]

It was determined that I was testing on an x86 tablet with an ARMv7 build. :)

STR in comment 0 produces an incorrect black page, but no real glitches on a Nightly x86 build.

Comment 4

[Aaron Train [:aaronmt]]

Is this invalid? Confused.

Comment 5

[Michael Comella (:mcomella) [NI reported issues only: ex-Mozilla]]

Yes, though I'm going to move this bug to focus on the black page on the Galaxy Tab using the STR from comment 0.

Again, this STR is of negligible concern, but it may be representative of further problems so it might be worth investigating (depending on our support of x86, which I'm unfamiliar with).

Note that I could not repro on an Asus Fonepad (x86).

Comment 6

[Michael Comella (:mcomella) [NI reported issues only: ex-Mozilla]]

Sorry, this is so crazy but the corruption has appeared on the latest Nightly (I think I was using an older version before).

Definitive info:
  * Graphical corruption on Galaxy Tab 3 when scrolling after using the str in comment 0
  * Black page, as opposed to white, on Galaxy Tab 3 using STR in comment 0
  * Black page, as opposed to white, when loading first web content (i.e. quickly open a page before Gecko loads)
  * Unreproable on Asus Fonepad (x86), Galaxy Nexus (ARM), or Nexus 7 (ARM)

Pretty negligible with these STR, but possibly caused by other, more insidious issues.

Comment 7

[BMO Automation]

We have completed our launch of our new Firefox on Android. The development of the new versions use GitHub for issue tracking. If the bug report still reproduces in a current version of [Firefox on Android nightly](https://play.google.com/store/apps/details?id=org.mozilla.fenix) an issue can be reported at the [Fenix GitHub project](https://github.com/mozilla-mobile/fenix/). If you want to discuss your report please use [Mozilla's chat](https://wiki.mozilla.org/Matrix#Connect_to_Matrix) server https://chat.mozilla.org and join the [#fenix](https://chat.mozilla.org/#/room/#fenix:mozilla.org) channel.