1720482 - Firefox 90 Update flashing badly on multiple websites

Status: RESOLVED WORKSFORME

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

Description

[caseyfrost]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0

Steps to reproduce:

Daily routine includes launching Tutanota.com (e-mail), Marketwatch.com and Tradingview.com

Actual results:

All three sites began flashing with intermittent black squares, random size and location, it's so bad I've had to use Edge to get by.

Not every page is having this issue mozilla.org behaves fine, YouTube seems to behave fine.

Expected results:

Normal behavior

Comment 1

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

The Bugbug bot thinks this bug should belong to the 'Core::Graphics: WebRender' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Darkspirit]

Thanks for the report! Please open about:support, click on "Copy text to clipboard" and paste it here.

Comment 3

[caseyfrost]

(In reply to Darkspirit from comment #2)

Thanks for the report! Please open about:support, click on "Copy text to clipboard" and paste it here.

I went to go do that, but all the fields are empty, it's not collecting any info it seems.

Comment 4

[Darkspirit]

Does it work if you open Help > Troubleshoot Mode > Open?

Comment 5

[caseyfrost]

Attachment: Attachment was requested

Comment 6

[caseyfrost]

(In reply to Darkspirit from comment #4)

Does it work if you open Help > Troubleshoot Mode > Open?

OK, yeah that fixed that, and troubleshooting mode has also fixed the flashing issues, I'll see if I can narrow it down by disabling specific plugins to see if one of them is the problem.

Comment 7

[Darkspirit]

Description: NVIDIA GeForce RTX 2060 SUPER

Display0: 1920x1080@60Hz : NVIDIA GeForce RTX 2060 SUPER
Display1: 5120x1440@100Hz : NVIDIA GeForce RTX 2060 SUPER
Display2: 3840x2160@30Hz : NVIDIA GeForce RTX 2060 SUPER
DisplayCount: 3
HardwareStretching: both=1 window-only=0 full-screen-only=2 none=0 error=0

Can this problem be fixed by disabling gfx.webrender.compositor on about:config and restarting Firefox? (bug 1638709)

Comment 8

[caseyfrost]

Well, for now I can't duplicate the problem, ever since jumping into, and the back out of Troubleshooting mode, the problem is gone. I'll have to give it a try tomorrow morning after a fresh computer start and see if it'll do it again with the exact same conditions.

Comment 9

[caseyfrost]

I can no longer duplicate this issue, it just...stopped ever since entering and exiting troubleshooting mode. This is day two of things just working correctly as they should after a fresh computer start in the morning.

Comment 10

[Darkspirit]

Does regular about:support work again or is it still empty?
According to bug 1720263 comment 11, the WEBRENDER_COMPOSITOR feature was already blocked for your setup. Then you might have seen bug 1712969 comment 5.

Comment 11

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

The bug has a release status flag that shows some version of Firefox is affected, thus it will be considered confirmed.