Bug 317551

Summary:	PDF pages rendered blank at >100% Zoom
Product:	[Applications] okular	Reporter:	Ben Daines <benjamindaines>
Component:	PDF backend	Assignee:	Okular developers <okular-devel>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	aacid, luigi.toscano, mailson
Priority:	NOR
Version First Reported In:	0.16.1
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
URL:	http://i.imgur.com/bvgwxtM.png
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	PDF that exhibits problem okular log

Description Ben Daines 2013-03-29 16:50:29 UTC

Some larger PDF file that I have which are image scans of pages will render blank when at larger than 100% zoom.  If I zoom out they will properly render, and reloading the file doesn't fix the issue.  Nor does closing Okular and reopening the file.  

Reproducible: Sometimes

Steps to Reproduce:
1. Open large image PDF
2. Zoom Greater than 100%
3.
Actual Results:  
Some pages rendered blank

Expected Results:  
Pages should render properly

Comment 1 Ben Daines 2013-03-29 16:51:47 UTC

Created attachment 78487 [details]
PDF that exhibits problem

Comment 2 Mailson Menezes 2013-03-29 17:15:43 UTC

I tried with the attached file but I couldn't reproduce that. Could you double check your okular version? Is it 0.16.1?

Comment 3 Ben Daines 2013-03-29 17:17:31 UTC

(In reply to comment #2)
> I tried with the attached file but I couldn't reproduce that. Could you
> double check your okular version? Is it 0.16.1?

Double checked.  It is 0.16.1

Comment 4 Albert Astals Cid 2013-04-01 22:44:54 UTC

Those "some pages" are they always the same pages or random ones?

Comment 5 Ben Daines 2013-04-01 22:54:21 UTC

(In reply to comment #4)
> Those "some pages" are they always the same pages or random ones?

Random.

Comment 6 Albert Astals Cid 2013-04-01 22:57:37 UTC

Can you run kdebugdialog, write okular in the search line edit, enable all the okular debug, then run okular in a terminal, open the file that shows this problem and attach as file all the output of okular in the terminal while reproducing this problem?

Comment 7 Ben Daines 2013-04-01 23:59:30 UTC

Created attachment 78565 [details]
okular log

I've attached the requested debug info.  I opened the file and scrolled through the document.  There were multiple blank pages.  Pages are considered blank when they have a rendered thumbnail, but are blank in the viewer.

Comment 8 Albert Astals Cid 2013-04-02 21:40:05 UTC

Which poppler version are you running?

Comment 9 Christoph Feck 2013-04-14 16:52:36 UTC

If you can provide the information requested in comment #8, please add it.

Comment 10 Ben Daines 2013-04-14 18:50:40 UTC

Sorry, missed that email notification.  Poppler version 0.20.2-15

Comment 11 Albert Astals Cid 2013-05-20 16:47:05 UTC

Do this blank pages still have the okular logo on the top left of the page? Or they are completely blank?

Comment 12 Christoph Feck 2013-06-15 21:56:33 UTC

If you can provide the information requested in comment #11, please add it.

Comment 13 Luigi Toscano 2014-05-08 14:00:57 UTC

Tried again (self compiled Okular 0.19.60, poppler 0.24.5-3), Memory usage Normal (the default I guess), even with high zoom: it's a bit slow at 1600% on the provided document when you jump to some random page, but it always renders the page. Did you try with a recent information? Can you please check also the comment #c11 ?

Comment 14 Albert Astals Cid 2017-03-28 22:24:42 UTC

No answer for years