Originally reported on: https://www.reddit.com/r/firefox/comments/g0xm9q/my_firefox_is_having_an_odd_artifacting_problem/

User reports that disabling WebRender resolves the issue.

Asif, could we try and ask this reporter to re-enable webrender but turn off direct composition by going to about:config and setting gfx.webrender.compositor to false?

Rares, can you see if you (or someone else at QA with similar hardware) can try and repro this issue with WebRender + DirectComp and a similar Nividia GPU?

Hi, is this issue related to Bug 1625857 ? we tried to reproduce this issue using the driver 442.74 on 2 laptops one with the Nvidia GeForce GTX 1050 as well as another one with Nvidia GeForce GTX 1650 but without success, we used the same steps as the other bug, scrolled on reddit, waited 10 to 15 minutes leaving it idle but still the issue would not occur. Are there any other steps we might try ? unfortunately we do not have a laptop or a desktop with the Nvidia GTX 1070.

No, this is a different bug, I suspect. Can we try and reproduce this bug with your Nvidia hardware with both WebRender and DirectComposition enabled? I am wondering if the bug is actually related to DirectComposition.

We did try to reproduce it on the Nvidia GTX 1650 with both Webrender and Direct Composition enabled but it did not occur on our end, on the Nvidia GTX 1050, I was only able to enable Webrender on it, Direct Composition still shows No hardware stretching support but I did try to force enable it and the issue still does not occur.

If its a different issue we need some new steps, maybe the old ones that caused the artefacts on reddit do not cause them with this gpu.

@yoasif can you help us with some steps ? on how we can reproduce this issue ? are you simply starting Firefox and the artefacts are there ?

The reporter claims that setting gfx.webrender.compositor=false did not help, which suggests that this is not related to DirectComposition

(In reply to Rares Doghi from comment #6)

@yoasif can you help us with some steps ? on how we can reproduce this issue ? are you simply starting Firefox and the artefacts are there ?

The user says:

There isn't any action, on every page even startup, these blocky artifacts are there. By moving my mouse or scrolling the blocks move around.

Hm, could be a driver issue? Might be worth suggesting to them to download the new driver Nvidia mentioned here: https://bugzilla.mozilla.org/show_bug.cgi?id=1625857#c31 just to help eliminate variables.

Jessie, the new driver (445.87), the user continues to see the issue.

Thanks for the report.
I personally haven't seen any issue like the screenshot. However, I haven't tried the exact configuration the original reporter has.
The report details:
NVIDIA GeForce GTX 1070 Ti
Display0: 2560x1440@59Hz
Display1: 1920x1080@75Hz
442.74 and 445.87

As far as I understand, nothing in the report signifies 442.74 as the source of the problem, or the NVIDIA driver for that matter.
To debug further, more info would be needed:

• Does this happen in both of the displays?
• Does original reporter have some sort of custom settings, like NVIDIA control panel settings or windows ClearType Text Tuner settings, HDR settings or such?
• If the original reporter has time to debug, downgrading to older driver 436.30 could be used as a test, too.

Hi Asif, just flagging https://bugzilla.mozilla.org/show_bug.cgi?id=1629744#c11 for you to see if we could learn more from the reporter. Trying a driver downgrade might be interesting.

I think I've figured it out, it's simply that my graphics card is dying. To answer your questions though, it does happen on both displays and no custom settings were used.

other programs are affected as well, particularly games such as Valorant. Although, not many other programs have had issues other than games and Firefox. Unfortunately I don't have a spare graphics card to test if that is the issue or not.

I'm going to set this to INCOMPLETE until we get more information. I suggested that they try the driver downgrade.