[Bug 463200] Re: Nautilus no longer generates thumbnails for images

[Mr.Mizzen]

In an effort to track down the source of the problem,
Launching Nautilus from a terminal I get:
r...@imperial-command:~# nautilus

(nautilus:5720): Eel-CRITICAL **: eel_preferences_get_boolean: assertion
`preferences_is_initialized ()' failed

** (nautilus:5720): WARNING **: No marshaller for signature of signal
'UploadFinished'

** (nautilus:5720): WARNING **: No marshaller for signature of signal
'DownloadFinished'

** (nautilus:5720): WARNING **: No marshaller for signature of signal 
'ShareCreateError'
Initializing nautilus-gdu extension
Initializing nautilus-open-terminal extension

I installed nautilus-dbg, then tried gdb to get a back trace. 
I launch gdb with my usual setup:
gdb nautilus 2>&1 | tee gdb-nautilus1.txt
(gdb) handle SIG33 pass nostop noprint
(gdb) set pagination 0
(gdb) run

However, it 
a) reports
Reading symbols from /usr/bin/nautilus...Reading symbols from 
/usr/lib/debug/usr/bin/nautilus...done.
(no debugging symbols found)...done.
b) exits and nautilus restarts without it.

Can someone give me a few hints on how to properly backtrace a nautilus process?
gdb output below:


GNU gdb (GDB) 7.0-ubuntu
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
...
Reading symbols from /usr/bin/nautilus...Reading symbols from 
/usr/lib/debug/usr/bin/nautilus...done.
(no debugging symbols found)...done.
(gdb) handle SIG33 pass nostop noprint
SignalStop  Print   Pass to program Description
SIG33 NoNo  Yes Real-time event 33
(gdb) set pagination 0
(gdb) run
Starting program: /usr/bin/nautilus 
[Thread debugging using libthread_db enabled]

(nautilus:882): Eel-CRITICAL **: eel_preferences_get_boolean: assertion 
`preferences_is_initialized ()' failed
[New Thread 0x7fffebf7d910 (LWP 885)]
[Thread 0x7fffebf7d910 (LWP 885) exited]

Program exited normally.
(gdb) run
Starting program: /usr/bin/nautilus 
[Thread debugging using libthread_db enabled]

(nautilus:4041): Eel-CRITICAL **: eel_preferences_get_boolean: assertion 
`preferences_is_initialized ()' failed
[New Thread 0x7fffebf7d910 (LWP 4044)]
[Thread 0x7fffebf7d910 (LWP 4044) exited]

Program exited normally.
(gdb)

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Nautilus no longer generates thumbnails for images
https://bugs.launchpad.net/bugs/463200
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[Bug 463200] Re: Nautilus no longer generates thumbnails for images

[Mr.Mizzen]

(Nautilus Nautilus 2.28.1, AMD64)
Same or similar problem:
Some folders will randomly stop displaying thumbnails.
Selecting the folder on the left side tree view gives a blank display on the 
right side and a spinning cursor.
Deleting files from /.thumbnails has no positive effect. At best when I view 
the folder again, I get thumbnail place holders but no thumbnails.
I looked to see if it was a mime problem, but on my system there is no 
.local/share/mime folder as suggested above.

The only oddity about these folders is when I use gThumb to view files, it 
leaves a /.comments folder with an xml file I can not open.
So far the only semi cure I have for this is a reboot. 
Then at least once I can view the files / thumbnails within the folders. 
Anytime there after, I can expect a blank view to appear.

This directory is hung up at the moment:
r...@imperial-command:/Archive/0/00 Wallpapers/New-Fantasy-Images# ls
3128123_thumbnail.jpg Lost_World_by_tomer666.png  ZK12 (49).jpg  
ZK4 (21).jpg  ZK5 (40).jpg  ZK8 (47).jpg
Beso_by_ELENADUDINA_content.jpg   Yuehui Tang 13.jpg  ZK2 (12).jpg   
ZK4 (22).jpg  ZK6 (19).jpg  ZK8 (49).jpg
Fantasy-Wallpapers (18).jpg   ZK10 (15).jpg   ZK2 (17).jpg   
ZK4 (24).jpg  ZK6 (57).jpg  ZK8 (6).jpg
Fantasy-Wallpapers (35).jpg   ZK10 (28).jpg   ZK2 (1).jpg
ZK4 (2).jpg   ZK7 (17).jpg  ZK8 (9).jpg
Fantasy-Wallpapers (71).jpg   ZK11 (13).jpg   ZK2 (26).jpg   
ZK4 (31).jpg  ZK7 (29).jpg  ZK9 (14).jpg
Fantasy-wallpapers-Pack (14).jpg  ZK11 (14).jpg   ZK2 (3).jpg
ZK4 (38).jpg  ZK7 (3).jpg   ZK9 (15).jpg
Fantasy-wallpapers-Pack (19).jpg  ZK11 (21).jpg   ZK2 (4).jpg
ZK5 (12).jpg  ZK7 (43).jpg  ZK9 (16).jpg
Fantasy-wallpapers-Pack (43).jpg  ZK11 (5).jpgZK2 (8).jpg
ZK5 (19).jpg  ZK7 (57).jpg  ZK9 (37).jpg
Fantasy-wallpapers-Pack (45).jpg  ZK12 (17).jpg   ZK 3 (17).jpg  
ZK5 (23).jpg  ZK8 (18).jpg  ZK-Wall-11 (15).jpg
Fantasy-wallpapers-Pack (52).jpg  ZK12 (21).jpg   ZK4 (13).jpg   
ZK5 (25).jpg  ZK8 (43).jpg
Fantasy-wallpapers-Pack (6).jpg   ZK12 (23).jpg   ZK4 (17).jpg   
ZK5 (35).jpg  ZK8 (45).jpg
Fantasy-wallpapers-Pack (8).jpg   ZK12 (39).jpg   ZK4 (18).jpg   
ZK5 (36).jpg  ZK8 (46).jpg

>From the terminal, if I launch gthumb, then view each file, I get this output 
>on the term:
r...@imperial-command:/Archive/0/00 Wallpapers/New-Fantasy-Images# gthumb 
3128123_thumbnail.jpg
gth_minimal_exif_tag_read: TAG value does not fit, Can't read full value
gth_minimal_exif_tag_read: TAG value does not fit, Can't read full value
gth_minimal_exif_tag_read: TAG value does not fit, Can't read full value
r...@imperial-command:/Archive/0/00 Wallpapers/New-Fantasy-Images# 

This is probably what is making the unreadable .comments/.xml
I assume exif tags would have nothing to do with making thumbs though.

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Nautilus no longer generates thumbnails for images
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[Bug 463200] Re: Nautilus no longer generates thumbnails for images

[Sebastien Bacher]

not a nautilus bug in any case, you installed or ran an application
writting mimetype definition, you might try to figure which one though,
it's probably something not confiming from the ubuntu default
installation

** Changed in: nautilus (Ubuntu)
   Status: Incomplete => Invalid

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[Bug 463200] Re: Nautilus no longer generates thumbnails for images

[Oded Arbel]

I have some files in .local/share/mime/application:

$ ls application/
x-extension-jpg.xml   x-extension-png.xml  x-msdownload.xml  
x-wine-extension-hlp.xml  x-wine-extension-ini.xml
x-extension-mrss.xml  x-extension-pp2.xml  x-wine-extension-cpl.xml  
x-wine-extension-inf.xml  x-wine-extension-its.xml

and they look like this:


http://www.freedesktop.org/standards/shared-mime-info"; 
type="application/x-extension-jpg">
  
  jpg document
  


After deleting them and also .local/share/mime/mime.cache, it started
generating thumbnails again.

I'm a bit concerned about this resolution because it seems that these
files were automatically generated by something called update-mime-
database, so its likely they will come back to bite me later. Well, at
least I'll know what to do.

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[Bug 463200] Re: Nautilus no longer generates thumbnails for images

[Sebastien Bacher]

the mimetype is wrong, do you have definitions in .local/share/mime
there?

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[Bug 463200] Re: Nautilus no longer generates thumbnails for images

[Oded Arbel]

1. Its in my default session. I created a new session to test with, and there 
it works fine.
2. I'm not sure regarding the definition of "non-standard" - I install stuff 
using the Ubuntu Software Center all the time, and I also have a few external 
packages installed as well (for example VirtualBox). None come to mind that may 
cause this.

Thumbnails for other files, for example - PDF files, work fine.

Can you please recommend a few places to look regarding fixing the thumbnails 
on my account? 
- I tried deleting .thumbnails and as a result I now do not have any thumbnails 
anywhere. 
- I looked in Nautilus preferences and under "preview" I have everything set to 
"local files only" and for "other previewable files" I also have "10mb" as the 
maximum size
- I tried installing all packages of the form gnome-*-thumbnailer, but that did 
not help

I think the problem may be in the mime settings - if I look at the
properties of a JPEG file and it said its type is "jpg document
(application/x-extension-jpg)" and similarly for png files.

I also tested creating GIF and XCF files and both show thumbnails
correctly and have their types list them as images (the XCF support
maybe the result of me installing gnome-xcf-thumbnailer). Also to create
the XCF and GIF files I opened a PNG file that was not thumbnailed using
GIMP, and that also caused a thumbnail to be generated for that file.

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[Bug 463200] Re: Nautilus no longer generates thumbnails for images

[Sebastien Bacher]

Thank you for your bug report, do you get the issue in a guest session?
Did you install anything non standard which could break it? There is no
other bug about this issue which means it's a local issue on your side
due either to the installation or configuration

** Changed in: nautilus (Ubuntu)
   Importance: Undecided => Low

** Changed in: nautilus (Ubuntu)
   Status: New => Incomplete

** Changed in: nautilus (Ubuntu)
 Assignee: (unassigned) => Ubuntu Desktop Bugs (desktop-bugs)

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Nautilus no longer generates thumbnails for images
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[Bug 463200] Re: Nautilus no longer generates thumbnails for images

[Oded Arbel]

** Attachment added: "Dependencies.txt"
   http://launchpadlibrarian.net/34592830/Dependencies.txt

** Attachment added: "ProcMaps.txt"
   http://launchpadlibrarian.net/34592831/ProcMaps.txt

** Attachment added: "ProcStatus.txt"
   http://launchpadlibrarian.net/34592832/ProcStatus.txt

** Attachment added: "XsessionErrors.txt"
   http://launchpadlibrarian.net/34592833/XsessionErrors.txt

** Attachment added: "usr_lib_nautilus.txt"
   http://launchpadlibrarian.net/34592834/usr_lib_nautilus.txt

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