Bug#589576: iceweasel: some animated gifs only show first frame - rest are blank

Heikki Aitakangas ornedan at gmail.com
Sun Jul 18 15:42:10 UTC 2010


Package: iceweasel
Version: 3.6.4-1
Severity: normal

Iceweasel shows only the first frame of some animated GIFs. In cases where the
problem occurs, the rest of the frames behave as though they were fully
transparent over the whole picture area. The normal cycling behaviour does
occur, so that the first frame is again shown after a duration that the rest of
the frames would have taken to be shown.

The problem exists in both the testing version (3.5.10-1) and experimental
version (3.6.4-1).
It is not extension-related - I could reproduce the problem with a clean
~/.mozilla after moving my real ~/.mozilla away.
Toggling KDE's compositing features did not affect the situation.

The problem is somehow related to Iceweasel itself as Konqueror renders the
animated GIFs just fine on the same system.


Based on the fact that only some GIFs show this bugginess, I would guess that
this is related to Iceweasel's GIF decoder.


A GIF that exhibits the problem:
http://www.gifs.net/Animation11/Computers_and_Technology/Air_Conditioners/Ceiling_fan.gif

A GIF that does not exhibit the problem:
http://www.gifs.net/Animation11/Computers_and_Technology/Air_Conditioners/Ventilator_2.gif



-- Package-specific info:

-- Extensions information
Name: Adblock Plus
Location: ${PROFILE_EXTENSIONS}/{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
Status: enabled

Name: DOM Inspector
Location: ${PROFILE_EXTENSIONS}/inspector at mozilla.org
Status: enabled

Name: Default
Location: /usr/lib/iceweasel/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
Package: iceweasel
Status: enabled

Name: FireXPath
Location: ${PROFILE_EXTENSIONS}/FireXPath at pierre.tholence.com
Status: enabled

Name: Firebug
Location: ${PROFILE_EXTENSIONS}/firebug at software.joehewitt.com
Status: enabled

Name: Firecookie
Location: ${PROFILE_EXTENSIONS}/firecookie at janodvarko.cz
Status: enabled

Name: Flashblock
Location: ${PROFILE_EXTENSIONS}/{3d7eb24f-2740-49df-8937-200b1cc08f8a}
Status: enabled

Name: Greasemonkey
Location: ${PROFILE_EXTENSIONS}/{e4a8a97b-f2ed-450b-b12d-ee082ba24781}
Status: enabled

Name: Image Zoom
Location: ${PROFILE_EXTENSIONS}/{1A2D0EC4-75F5-4c91-89C4-3656F6E44B68}
Status: enabled

Name: Tab Mix Plus
Location: ${PROFILE_EXTENSIONS}/{dc572301-7619-498c-a57d-39143191b318}
Status: enabled

Name: Web Developer
Location: ${PROFILE_EXTENSIONS}/{c45c406e-ab73-11d8-be73-000a95be3b12}
Status: enabled

Name: XPather
Location: ${PROFILE_EXTENSIONS}/{636fd8b0-ce2b-4e00-b812-2afbe77ee899}
Status: enabled

-- Plugins information
Name: Java(TM) Plug-in 1.6.0_20
Location: /usr/lib/jvm/java-6-sun-1.6.0.20/jre/lib/amd64/libnpjp2.so
Package: sun-java6-bin
Status: enabled

Name: Shockwave Flash
Location: /usr/lib/swfdec-mozilla/libswfdecmozilla.so
Package: swfdec-mozilla
Status: enabled

Name: Skype Buttons for Kopete
Location: /usr/lib/mozilla/plugins/skypebuttons.so
Package: kopete
Status: enabled


-- Addons package information
ii  iceweasel      3.6.4-1        Web browser based on Firefox
ii  kopete         4:4.4.4-1      instant messenger for KDE 4
ii  sun-java6-bin  6.20-dlj-1     Sun Java(TM) Runtime Environment (JRE) 6 (ar
ii  swfdec-mozilla 0.8.2-1        Mozilla plugin for SWF files (Macromedia Fla

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (900, 'testing'), (800, 'unstable'), (102, 'experimental'), (101, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-trunk-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages iceweasel depends on:
ii  debianutils                   3.3        Miscellaneous utilities specific t
ii  fontconfig                    2.8.0-2.1  generic font configuration library
ii  libc6                         2.11.2-2   Embedded GNU C Library: Shared lib
ii  libglib2.0-0                  2.24.1-1   The GLib library of C routines
ii  libgtk2.0-0                   2.20.1-1   The GTK+ graphical user interface 
ii  libnspr4-0d                   4.8.4-1    NetScape Portable Runtime Library
ii  libstdc++6                    4.4.4-6    The GNU Standard C++ Library v3
ii  procps                        1:3.2.8-9  /proc file system utilities
ii  xulrunner-1.9.2               1.9.2.4-2  XUL + XPCOM application runner

iceweasel recommends no packages.

Versions of packages iceweasel suggests:
ii  latex-xft-fonts      1.6.6-2             TrueType versions of some TeX font
ii  libgssapi-krb5-2     1.8.1+dfsg-5        MIT Kerberos runtime libraries - k
ii  libkrb53             1.6.dfsg.4~beta1-13 Transitional library package/krb4 
pn  mozplugger           <none>              (no description available)
ii  ttf-lyx              1.6.6-2             TrueType versions of some TeX font
pn  ttf-mathematica4.1   <none>              (no description available)
ii  xfonts-mathml        4                   Type1 Symbol font for MathML
pn  xprint               <none>              (no description available)

Versions of packages xulrunner-1.9.2 depends on:
ii  libasound2              1.0.23-1         shared library for ALSA applicatio
ii  libatk1.0-0             1.30.0-1         The ATK accessibility toolkit
ii  libbz2-1.0              1.0.5-4          high-quality block-sorting file co
ii  libc6                   2.11.2-2         Embedded GNU C Library: Shared lib
ii  libcairo2               1.9.12-1         The Cairo 2D vector graphics libra
ii  libdbus-1-3             1.2.24-1         simple interprocess messaging syst
ii  libevent-1.4-2          1.4.13-stable-1  An asynchronous event notification
ii  libffi5                 3.0.9-2          Foreign Function Interface library
ii  libfontconfig1          2.8.0-2.1        generic font configuration library
ii  libfreetype6            2.4.0-1          FreeType 2 font engine, shared lib
ii  libgcc1                 1:4.4.4-6        GCC support library
ii  libglib2.0-0            2.24.1-1         The GLib library of C routines
ii  libgtk2.0-0             2.20.1-1         The GTK+ graphical user interface 
ii  libhunspell-1.2-0       1.2.11-1         spell checker and morphological an
ii  libjpeg62               6b1-1            The Independent JPEG Group's JPEG 
ii  libmozjs3d              1.9.2.4-2        The Mozilla SpiderMonkey JavaScrip
ii  libnspr4-0d             4.8.4-1          NetScape Portable Runtime Library
ii  libnss3-1d              3.12.6-2         Network Security Service libraries
ii  libpango1.0-0           1.28.1-1         Layout and rendering of internatio
ii  libpixman-1-0           0.18.2-1         pixel-manipulation library for X a
ii  libpng12-0              1.2.44-1         PNG library - runtime
ii  libreadline6            6.1-3            GNU readline and history libraries
ii  libsqlite3-0            3.6.23.1-4       SQLite 3 shared library
ii  libstartup-notification 0.10-1           library for program launch feedbac
ii  libstdc++6              4.4.4-6          The GNU Standard C++ Library v3
ii  libx11-6                2:1.3.3-3        X11 client-side library
ii  libxrender1             1:0.9.5-2        X Rendering Extension client libra
ii  libxt6                  1:1.0.7-1        X11 toolkit intrinsics library
ii  zlib1g                  1:1.2.3.4.dfsg-3 compression library - runtime

-- no debconf information





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