1684295 - Hardware Acceleration broken in FF 84.0.1 (brief glitches with 144Hz Win10/Nvidia) (single display)

Status: NEW

(Core :: Graphics: WebRender, defect, P3)

Description

[mikel72c]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:84.0) Gecko/20100101 Firefox/84.0

Steps to reproduce:

Update to 84.0.1

Actual results:

Flickering on all websites which goes away after disabling Hardware acceleration.

Flickering consists of showing random Parts of the website anywhere in the browser window when scrolling .

Expected results:

No Flickering. Which didn't occur with all version before 84.0.1

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 2

[Darkspirit]

Thanks for the report! Please type about:support into your address bar, press enter, click on "Copy Text to clipboard" and paste it here. Thanks!

Comment 3

[Darkspirit]

Please do this with hardware acceleration enabled. Please also attach a screenshot of the bug if you can.

Comment 4

[mikel72c]

Attachment: Troubleshooting info

Screenshot is a bit problematic would not show up on that would have to make a video. For it to show up.

Comment 5

[mikel72c]

Here is a video of the problem:

https://1drv.ms/u/s!Ak4GtT140HDBnUSVxrLMTDxFWsN6?e=wRUAWB

goes away when Hardware acceleration is turned off in Browser menu.

Comment 6

[Darkspirit]

Thanks! Please reenable hardware acceleration, open about:config, set gfx.webrender.compositor to false, restart Firefox and check if that is enough to fix the problem.

Comment 7

[mikel72c]

Yes that fixes it.

Comment 8

[Jim Mathies [:jimm]]

Display count is 1, good hardware, high refresh rate.

Direct2D: true
Uses Tiling (Content): true
Off Main Thread Painting Enabled: true
Off Main Thread Painting Worker Count: 4
Target Frame Rate: 144
DirectWrite: true (10.0.19041.546)
GPU #1
Active: Yes
Description: NVIDIA GeForce GTX 1080 Ti
Vendor ID: 0x10de
Device ID: 0x1b06
Driver Version: 27.21.14.6097
Driver Date: 12-17-2020

Comment 9

[Jeff Muizelaar [:jrmuizel]]

We'll probably wait for the dual screen flicker (bug 1638709) issue to be resolved before doing anything about this one.

Comment 10

[NVD]

https://www.nvidia.com/en-us/geforce/news/geforce-rtx-3060-game-ready-driver/

Can you test with the latest GeForce 461.72 driver?

Comment 11

[Glenn Watson [:gw]]

There is a similar sounding bug affecting NVIDIA GPUs on the Chrome bug tracker - https://bugs.chromium.org/p/chromium/issues/detail?id=1185538.

Would you be able to temporarily apply the test workaround mentioned in that bug (https://bugs.chromium.org/p/chromium/issues/detail?id=1185538#c10) and let us know if that resolves the issue you're seeing?

That will allow us to know if we're looking at the same underlying bug or if this is something different.