1722571 - Firefox PDF rendering problem

Status: VERIFIED FIXED

(Firefox :: PDF Viewer, defect)

Description

[joe70511]

Attachment: problem.pdf

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36 Edg/92.0.902.55

Steps to reproduce:

Opened the file (Windows 10)

Actual results:

high CPU & not correctly displayed

Expected results:

It should be correctly displayed. It is in Acrobat reader & Chrome

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 revert this change in case you think the bot is wrong.

Comment 2

[Marco Castelluccio [:marco]]

I can't seem to reproduce, the rendering looks fine to me.

Can you attach a screenshot?

Comment 3

[Alice0775 White]

The problem of high CPU and memory usage with this specific PDF seems to have been fixed in Latest Nightly by Bug 1722352.

Comment 4

[joe70511]

Attachment: problem pdf screenshot.jpg

Comment 5

[joe70511]

See attached.
The CPU/memory problem is severe on my laptop, which may be related to this issue

Comment 6

[Marco Castelluccio [:marco]]

Could you try with Firefox Nightly, so we can confirm this bug is fixed for you too?

Comment 7

[joe70511]

How do I access Firefox Nightly ?

Comment 8

[joe70511]

Somewhat better using 91.0b7

The pdf does render eventually - several minutes later, with nothing else running.
Still is killing my laptop which has 12G memory.
Not sure what is going on here.

Again, no issue with Adobe Reader, Chrome or Edge. On all of these, the page comes up almost instantly.
Dramatic difference with them and Firefox.

I have a new laptop on order. I'll see if things are better on it once it arrives and is set up, but I doubt it.

Comment 9

[Marco Castelluccio [:marco]]

You can download Nightly from https://www.mozilla.org/firefox/channel/desktop/.
The changes from bug 1722352, which maybe fixed this, are also in latest Beta (the next one, Beta 8. The one you're testing with is Beta 7).

Comment 10

[Marco Castelluccio [:marco]]

The regression range is https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=940a3ad12e3dc9b2809b02f6a8ac8e941a50d2a1&tochange=6f1d11e15050a7c997ae4eefe944e2800b42bdfa, I didn't go further as bug 1711106 is very likely the culprit.

Comment 11

[joe70511]

Just auto-updated to 91.0b8.
The rendering now is way faster- several seconds- and accurate.
Still slower than with the other apps, but I can live with that.
Looks like this bug is resolved.
Thanks for your help.

Comment 12

[Marco Castelluccio [:marco]]

(In reply to joe70511 from comment #11)

Just auto-updated to 91.0b8.
The rendering now is way faster- several seconds- and accurate.
Still slower than with the other apps, but I can live with that.
Looks like this bug is resolved.
Thanks for your help.

Thanks! So this is fixed by the pdf.js update from bug 1722352, in particular by https://github.com/mozilla/pdf.js/pull/13770.

Comment 13

[Daniel Bodea [:danibodea]]

I have confirmed the issue in Firefox Release v90.0.2 and I have verified the fix in Firefox Beta v91.0b9 and Firefox Nightly v92.0a1 from 2021-07-30.