Do you still see that issue in newer Ubuntu versions?
** Changed in: nautilus (Ubuntu)
Importance: Undecided => Low
** Changed in: nautilus (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1444790
Title:
crash if thumbnailer fails to produce output
Status in nautilus package in Ubuntu:
Incomplete
Bug description:
Step 1: Use a custom thumbnailer which doesn't always produce output.
I'm personally using this one, since the default size (256x256) often
produces a png thumbnail which takes more space than the original jpg
image, and imagemagick's convert seems to have a bug for palette-png
to grayscale conversion:
[Thumbnailer Entry]
TryExec=ffmpeg
Exec=ffmpeg -i %i -vf
"scale='min(iw,128):min(ih,128):force_original_aspect_ratio=decrease',format=rgba|rgb24"
-frames 1 -y -f image2 -c:v png %o
MimeType=image/gif;image/jpeg;image/png;image/jp2;image/x-webp
Step 2: navigate to a folder that the thumbnailer can't handle. For
me, that was "balloon.jp2" from http://opf-labs.org/format-corpus
/jp2k-formats/
My version of ffmpeg says on the command line that "Progression order
RPCL is not implemented. [...] Output file is empty, nothing was
encoded". Not having any file from the thumbnailer, or maybe having an
empty, 0-byte file (ffmpeg does not produce a 0-byte output file from
the command line), causes nautilus to freeze and crash.
This happened multiple times. However, just now I checked and it
didn't crash, and a thumbnail exists for the jp2 image, /sigh. But
creating a copy of the jp2 image does lead to crashes. Ok, the reason
is that eog creates a thumbnail when one doesn't exist and the
system's default thumbnailers fail. Opening the image gallery in eog
causes thumbnails to be created for all visible images.
That is, when running eog from a terminal, opening the image gallery
caused ffmpeg's output (with the error message) to be displayed in
that terminal. But the thumbnail is still created, and eog must have
done it.
It's also possible nautilus crashes when the fallback gnome-
thumbnailer fails to create a file, which I think is what happens when
it tries to open a jpeg-2000 file. A few months ago I noted this bug:
>Another bug, crashes when trying to generate thumbnail for jpeg-2000
(jp2). Avoided if thumbnail is already created, maybe in some other
cases too. Possibly just when thumbnail isn't created quickly enough
(thumbnailer fails or something).
...but apparently I fixed it somehow, not sure.
So it's totally fine that no thumbnail is created when the existing
thumbnailer entries aren't sufficient. But nautilus shouldn't crash.
When running nautilus from the command line, it says there was a
segmentation fault, core dumped, with a crash file being generated in
/var/crash (which I'm deleting).
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: nautilus 1:3.10.1-0ubuntu15.1
ProcVersionSignature: Ubuntu 3.16.0-30.40-generic 3.16.7-ckt3
Uname: Linux 3.16.0-30-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.7-0ubuntu8.3
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Apr 15 20:48:20 2015
GsettingsChanges:
b'org.gnome.nautilus.list-view' b'default-visible-columns' b"['name',
'size', 'date_modified', 'date_accessed', 'type']"
b'org.gnome.nautilus.list-view' b'default-column-order' b"['name', 'size',
'date_modified', 'date_accessed', 'type', 'group', 'where', 'mime_type',
'owner', 'permissions']"
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)
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