Re: GTK can't load images
On Wednesday 11 November 2020 07:06:31 The Wanderer wrote:
> On 2020-11-11 at 06:12, Malte Marwedel wrote:
> > Hello,
> > since recently, several applications (firefox, pavucontrol,
> > pidgin...) fail to load images with gtk.
> > This happens when logging in as different user too, so its unlikely
> > this is a setting in the ~ directory.
> > The error message is as following:
> >
> > $ pavucontrol
> >
> > (process:13818): Gtk-WARNING **: 11:47:10.492: Locale not supported
> > by C library.
> > Using the fallback 'C' locale.
> >
> > (pavucontrol:13818): Gtk-WARNING **: 11:47:10.592: Could not load a
> > pixbuf from icon theme.
> > This may indicate that pixbuf loaders or the mime database could not
> > be found.
> > **
> > Gtk:ERROR:../../../../gtk/gtkiconhelper.c:494:ensure_surface_for_gic
> >on: assertion failed (error == NULL): Failed to load
> > /usr/share/icons/Adwaita/16x16/status/image-missing.png:
> > Unrecognized image file format (gdk-pixbuf-error-quark, 3)
> > Abgebrochen
>
> At a glance, this doesn't look like it means the program thinks the
> file isn't present, but that it thinks the file is in an invalid
> format.
>
> Have you confirmed that this file is in fact a valid PNG, and can be
> opened and displayed correctly?
>
> If it is, then I would suspect that something about GTK's ability to
> recognize and load that file format has become broken. The error
> messages from your compilation attempt seem to support that idea.
I can verify that same failure, but stretch at least then falls back to
gimp to display the image. Started at least a week ago. Seems to me I
saw a libpixbuf update go by.
> > After googling the error for two hours but don't finding any working
> > solution. I started to dig the problem down.
> > Lucily, I had already build gtk+3.0-3.24.5 myself before (reason:
> > https://superuser.com/questions/1033414/how-to-disable-gtkfilechoose
> >rdialog-search), so I have debug symbols there
>
> <snip>
>
> > gdk_pixbuf_new_from_stream is returning NULL. Unfortunately there
> > are no debug symbols in Debian for libgdk_pixbuf.
>
> Are you sure?
>
> $ apt-cache search libgdk-pixbuf | grep dbgsym
> libgdk-pixbuf2.0-0-dbgsym - debug symbols for libgdk-pixbuf2.0-0
> libgdk-pixbuf2.0-bin-dbgsym - debug symbols for libgdk-pixbuf2.0-bin
>
> Admittedly it's not present by default; you have to add the
> appropriate debug repository, then run 'apt-get update'. I have three
> of them defined, but two of them commented out, so only one available
> in practice.
>
> $ apt-cache policy libgdk-pixbuf2.0.0-dbgsym
> libgdk-pixbuf2.0-0-dbgsym:
> Installed: (none)
> Candidate: 2.40.0+dfsg-5
> Version table:
> 2.40.0+dfsg-5 500
> 500 http://debug.mirrors.debian.org/debian-debug
> testing-debug/main amd64 Packages
>
> $ grep .-debug /etc/apt/sources.list
> #deb http://debug.mirrors.debian.org/debian-debug/ stable-debug main
> non-free contrib
> deb http://debug.mirrors.debian.org/debian-debug/ testing-debug main
> non-free contrib
> #deb http://debug.mirrors.debian.org/debian-debug/ unstable-debug main
> non-free contrib
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
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- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>
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