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Issue metadata

Status: WontFix
Owner:
Closed: Jul 27
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Android
Pri: 2
Type: Bug



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Visual artefacts on latest Canary on Galaxy Note Edge

Reported by serp...@gmail.com, Jun 19 2018

Issue description

Example URL:

Steps to reproduce the problem:
1. Open Chromium Canary on Galaxy Note Edge (tblteatt) - OS Android 5.1
2. Browse a web page

What is the expected behavior?

What went wrong?
Content is glitched (white squares appearing on the page)

Does it occur on multiple sites: Yes

Is it a problem with a plugin? N/A 

Did this work before? Yes Possibly 68.0.3438

Does this work in other browsers? Yes

Chrome version: 69.0.3462  Channel: canary
OS Version: 5.1
Flash Version:
 
ezgif-2-cfe81d9433.mp4
4.4 MB View Download
Screenshot_2018-06-18-06-15-50.jpg
295 KB View Download

Comment 1 by bokan@chromium.org, Jun 19 2018

Components: -Blink Internals>GPU

Comment 2 by ericrk@chromium.org, Jun 19 2018

Cc: ericrk@chromium.org
Owner: cblume@chromium.org
Status: Assigned (was: Unconfirmed)
cblume@, can you grab a galaxy note edge from the device library and see if this bisects? Thanks!

Comment 3 by cblume@chromium.org, Jun 19 2018

We do not have a Galaxy Note Edge to test with.
However, we do have a Galaxy Note 4, which shares the same GPU....I think.

It seems like there is a version of both the Galaxy Note Edge and the Galaxy Note 4 which uses Adreno 420 and another version which uses Mali T-760. I can test on a Mali T-760.



serphen@gmail.com, can you go to chrome://gpu and scroll down to the "GPU0" part of the table?




I just grabbed the latest Canary (69.0.3465.2) and could not repro.

This test device is running Android 4.4.4 though. I don't want to update the Android version on this device since I can't set it back for the next tester.

Comment 4 by serp...@gmail.com, Jun 20 2018

Sure.
The device has a Adreno 420, driver version 104.0, pixel shader version 3.10, vertex shader version 3.10.

I will let you know if I can figure out better way to repro or if I can repro on a cloud device (to be sure it's not hardware related).

Comment 5 by cblume@chromium.org, Jun 20 2018

Well shoot.
I'll see if any of our other Galaxy Note 4s have the Adreno 420 and not the Mali T-760.

I tried the exact Canary build which you reported and was not able to reproduce the error on the Mali T-760.

Comment 6 by cblume@chromium.org, Jun 20 2018

I found a Galaxy Note 4 with an Adreno 420.
In installed that exact Canary build but could not reproduce the bug.
This test device was on Android 5.1.1 as well.
Driver version 104.0, pixel shader version 3.10, vertex shader version 3.10.

I lucked out to have a device so similar. But I still cannot reproduce. :(



Maybe the difference between Android 5.1 and 5.1.1 is significant?
Or maybe there was something between our two tests?
Does this reproduce every time for you or do you need to do something special to trigger it?


Just to double check, at the top of chrome://gpu in your Canary build, under "Graphics Feature Status" everything is green (Hardware accelerated) except for:
- Multiple Raster Threads: Disabled
- Native GpuMemoryBuffers: Software only. Hardware acceleration disabled
- Out-of-process Rasterization: Disabled
- Hardware Protected Video Decode: Unavailable
- Skia Deferred Display List: Disabled
- Skia Renderer: Disabled
- Surface Synchronization: Disabled
- Viz Service Display Compositor: Disabled
right?

If we have no clues from the above things, we might need to start comparing chrome://flags which is not ideal.

Comment 7 by cblume@chromium.org, Jun 28 2018

Ping
Friendly ping.
I am unable to reproduce this. Are you still seeing this behavior?
Status: WontFix (was: Assigned)
Closing since I cannot repro and/or it may already be fixed.

If this problem still exists please feel free to re-open it.
Cc: enne@chromium.org

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