Crash when switching images rapidly in collection pane

Thanks for your bug. Could you get a backtrace with gdb?
- gdb eog
(gdb) run
... crash
(gdb) thread apply all bt

and copy that to a comment

this is what i get

zeus@laptop:~$ gdb eog
GNU gdb 6.4-debian
Copyright 2005 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i486-linux-gnu"...(no debugging symbols found)
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".

(gdb) set args DSC00388-2.jpg
(gdb) run
Starting program: /usr/bin/eog DSC00388-2.jpg
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---Type <return> to continue, or q <return> to quit---
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[Thread debugging using libthread_db enabled]
[New Thread 922319616 (LWP 3648)]
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---Type <return> to continue, or q <return> to quit---
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---Type <return> to continue, or q <return> to quit---
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JPEG is sRGB
JPEG is sRGB
JPEG is sRGB
JPEG is sRGB
JPEG is sRGB
JPEG is sRGB

(eog:24034): Eog-WARNING **: Image 00003.jpg has requested data already loaded.

Eog-ERROR **: file eog-image.c: line 727 (eog_image_real_load): assertion failed: (priv->image == NULL)
aborting...
JPEG is sRGB
JPEG is sRGB

(eog:24034): Eog-WARNING **: Image 00004.jpg has requested data already loaded.

Eog-ERROR **: file eog-image.c: line 727 (eog_image_real_load): assertion failed: (priv->image == NULL)
aborting...
Multiple segmentation faults occurred; can't display error dialog
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I get such errors almost everytime i scroll fast, very easy to reproduce on any machine, confirmed of course

Easily reproducable

do you still get that issue?

As of eog-2.14.1-0ubuntu2, unfortunately yes :(

Contrary to the first impression, the easiest way to reproduce this is a directory with only 2-3 small images. Just scroll the mouse wheel fast and thats it.

That's known upstream: http://bugzilla.gnome.org/show_bug.cgi?id=340827

The upstream bug now has a patch attached which appears to fix the problems (there are actually two race conditions with very similar symptoms).

The upstream bug now has an even better patch.

Will this be applied to Dapper?

I went ahead and made a debdiff of the patch.

Ernst, the patch is not trivial and upstream has not commented on it yet, hurrying it like that is probably not a good idea. We will evaluate it after getting upstream comment on it

This upload fixes the issue:

 eog (2.15.90-0ubuntu1) edgy; urgency=low
 .
   * New upstream version:
     - Avoid losing EXIF data when saving changed jpeg images
     - Use middle mouse drag to scroll image
     - Make transparent color selection work
     - Fix crash when switching images with mouse wheel (Ubuntu: #44689)
     - Updated translations: Mahay Alam Khan (bn_IN), Jordi Mallach (ca), Jakub
       Friedl (cs), Kostas Papadimas (el), Christophe Merlet (RedFox) (fr),
       Satoru SATOH (ja), Daniel Nylander (sv).

The patch should be commited to the stable branch to and dapper-updates will get it later

Fixed to dapper-updates with that upload:

 eog (2.14.3-0ubuntu1) dapper-updates; urgency=low
 .
   * New upstream version:
     - Properly sort image filenames containing numbers
     - Thumbnailing fixes
     - Fix printing for images with alpha channel
     - Several code cleanups
     - Make transparent color selection work
     - Avoid losing EXIF data when saving changed jpeg images
     - Fix crash with fast image switching (Ubuntu: #44689)
     - Updated translations: Raivis Dejus (lv), Christophe Merlet (fr)