Bug#544563: iceweasel: doesn't display some PNG images

Mike Hommey mh at glandium.org
Wed Dec 23 12:30:21 UTC 2009


Hi,

Sorry for the late answer.

On Tue, Sep 01, 2009 at 05:20:01PM +0200, Jens Seidel wrote:
> Package: iceweasel
> Version: 3.0.12-1
> Severity: normal
> 
> Hi,
> 
> even after removing ~/.mozilla/firefox/ and using option -safe-mode
> I often notice that iceweasel doesn't display all PNG images. I suspect
> that only transparent images are problematic. Even the not supported
> ones are displayed until the image is completely rendered (I see how the
> first top part is drawn), once this happens the image vanishes and I see
> only the empty background image.
> 
> This could be an error in libpng or whatever library is used to render
> PNG images.
> 
> One example page is http://eclipse.org/linuxtools/new/ where nearly no
> image is displayable. I attached an image from this page.
> 
> After converting the image using ImageMagick's convert I get a viewable
> image autoreconf2.png:
> 
> $ convert autoreconf.png PNG24:autoreconf2.png
> $ identify autoreconf.png
> autoreconf.png PNG 718x293+0+0 DirectClass 8-bit 31.1K 0.000u 0:01
> $ identify autoreconf2.png
> autoreconf2.png PNG 718x293+0+0 DirectClass 8-bit 23.6K 0.000u 0:01
> 
> (The PNG32 format doesn't work).
> 
> Please note that opening the image (file:///tmp/autoreconf.png) is
> sufficient to demonstrate this bug, there is no need to load an HTML
> page.

I can't reproduce the problem with either the version in lenny or the
one in squeeze. Does it still happen for you ?

Mike





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