1910395 - PDF viewer flickering and "smearing" text around

Status: RESOLVED DUPLICATE of bug 1907828

(Core :: Graphics: Canvas2D, defect, P2)

Description

[abc013]

Attachment: bug.png

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0

Steps to reproduce:

The .pdf-viewer does not work for any kind of .pdf. If you open up any .pdf-file, the issue pops up.

Actual results:

The viewer renders incorrectly, flickers, only renders text occasionally and "smears" it around (as if the buffer wasn't cleared). It looks like a graphics issue to me. When I try to shoot a screenshot, even the tool "smears" around in the pdf-viewer section of the screen. The screenshot results in a transparent view of the text of the pdf.

Expected results:

The .pdf should be rendering correctly, without flickering and smearing.

Comment 1

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

The Bugbug bot thinks this bug should belong to the 'Firefox::PDF Viewer' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Calixte Denizet (:calixte)]

:abc013, could you check if setting gfx.canvas.accelerated to false in about:config is fixing your issue ?

Comment 3

[abc013]

Yes, that indeed fixes the issue! Thank you very much. Do you need further information?

Comment 4

[Calixte Denizet (:calixte)]

It's very likely a dup of bug 1907828.

Comment 5

[Bob Hood [:bhood]]

: abc013, can you please capture the output of your about:support page to a file and attach it here?

Comment 6

[abc013]

Attachment: about_support_summary

Comment 7

[abc013]

I attached the file you requested. Please keep in mind that I left gfx.canvas.accelerated on false for this export.

Comment 8

[droatsyr]

I am able to reproduce in Rocky 9 with the flatpak of Firefox (version 128). Seems there are a couple other error reports such as https://github.com/mozilla/pdf.js/issues/18334

Switching gfx.canvas.accelerated to false or zooming out to 10% both fixed the issue. I am using X11 with the Nvidia 555.42.06 driver.

Comment 9

[Bob Hood [:bhood]]

abc013, could you please retest to see if this behavior persists?

Comment 10

[abc013]

It seems like it's gone, thank you! :D Feel free to close the issue.

Comment 11

[abc013]

Let me correct that, it appeared today again. I do not know what triggered the issue.

Comment 12

[Tom25519]

This bug also reproduce on https://dlcdnets.asus.com.cn/pub/ASUS/mb/LGA1700/TUF_GAMING_B760M-PLUS_WIFI_D4/C21295_TUF_GAMING_B760M-PLUS_WIFI_D4_UM_12P_WEB.pdf.

Comment 13

[Tom25519]

Attachment: Firefox.png

Comment 14

[Tom25519]

Attachment: Edge.png

Comment 15

[Calixte Denizet (:calixte)]

:Tom25519, it's very likely not the same issue.
Could you file a new bug for it please ?
Thank you.

Comment 16

[Bob Hood [:bhood]]

Flagging this report as stalled until we have the cycles to work it. Please remove the keyword when actively addressing it.

Comment 18

[BugBot (nomail) [:suhaib / :marco/ :calixte]]

Since the bug is closed, the stalled keyword is now meaningless.
For more information, please visit BugBot documentation.