Slow thumbnail generation and scrolling

[Heineken]

After a GTK update this morning (2014-09-13, via update manager on 14.04. LTS), the thumbnail generation on evince 3.10.3 became very slow. Whenever loading the next thumbnail image, evince completely hangs. This makes reading documents very annoying.

This seems to be related to these bug-reports:
https://bugzilla.gnome.org/show_bug.cgi?id=691448 (!)
https://bugzilla.redhat.com/show_bug.cgi?id=1047566

The document opens fine in other viewers (like xpdf)
When the thumbnails side pane is disabled, the problem goes away.

[Heineken (lars-heineken)]

The issues surfaces only with large PDF files (1000 pages) on my PC.

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue you are reporting is an upstream one and it would be nice if somebody having it could send the bug to the developers of the software by following the instructions at https://wiki.ubuntu.com/Bugs/Upstream/GNOME. If you have done so, please tell us the number of the upstream bug (or the link), so we can add a bugwatch that will inform us about its status. Thanks in advance.

[penalvch (penalvch)]

Heineken, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please provide an example document that demonstrates this problem?

[Heineken (lars-heineken)]

Yes, unfortunately no change so far.
A document that shows the effect nicely is this one: (~37 MB)
http://prelude.de/NSX/Service%20Manual%20-%201997.pdf

Simply try to scroll 10-20 pages as fast as your mouse wheel allows.
Without thumbnail side-bar it scrolls absolutely smooth. When the side-bar is enabled though, every page is stuck loading until it's thumbnail is loaded.

PS: I tried to file an upstream bug but the description above is so generic that I got lost evey time I tried.

[penalvch (penalvch)]

Heineken, thank you for taking the time to report this bug and helping to make Ubuntu better. However, I am closing it because the bug has been fixed in the latest development version of Ubuntu - Vivid Vervet.

This is a significant bug in Ubuntu. If you need a fix for the bug in previous versions of Ubuntu, please perform as much as possible of the SRU Procedure [1] to bring the need to a developer's attention.

[1]: https://wiki.ubuntu.com/StableReleaseUpdates#Procedure

[Miguel Rubio-Roy (mrubioroy)]

I've tested the PDF included by Christopher and I observe the exact same behavior as with some of my
other PDF documents.

I think the fix should be also rolled out for the last LTS version 14.04

Thanks!