Bug 317551 - PDF pages rendered blank at >100% Zoom
Summary: PDF pages rendered blank at >100% Zoom
Status: RESOLVED NOT A BUG
Alias: None
Product: okular
Classification: Applications
Component: PDF backend (show other bugs)
Version: 0.16.1
Platform: Fedora RPMs Linux
: NOR normal
Target Milestone: ---
Assignee: Okular developers
URL: http://i.imgur.com/bvgwxtM.png
Keywords:
Depends on:
Blocks:
 
Reported: 2013-03-29 16:50 UTC by Ben Daines
Modified: 2017-03-28 22:24 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
PDF that exhibits problem (1.30 MB, application/pdf)
2013-03-29 16:51 UTC, Ben Daines 		Details
okular log (94.70 KB, text/plain)
2013-04-01 23:59 UTC, Ben Daines 		Details
View All Add an attachment

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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