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Thread: QT 4.7: GdkPixbuf-WARNING **: Bug! loader 'png' didn't set an error on failure

  1. #1
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    Exclamation QT 4.7: GdkPixbuf-WARNING **: Bug! loader 'png' didn't set an error on failure

    Hi,
    I have problem with Qt 4.7 qt-sdk-linux-x86_64-opensource-2010.05.1.bin under ubuntu 9.04 amd64 bit, with default buttons. The pixmaps are not beeing shown.

    The file-open dialogs do not show the png for the open-butten, or in generall the png's for the directories, if i'm browsing through them..

    regards Astronomy

    Qt Code:
    1. (<unknown>:10800): GdkPixbuf-WARNING **: Bug! loader 'png' didn't set an error on failure
    2.  
    3. (<unknown>:10800): Gtk-WARNING **: Error loading theme icon 'gtk-find' for stock: Interner Fehler: Bildlader-Modul »png« schaffte es nicht, eine Operation abzuschließen, gab aber keinen Grund für den Fehler an
    4.  
    5. (<unknown>:10800): GdkPixbuf-WARNING **: Bug! loader 'png' didn't set an error on failure
    6.  
    7. (<unknown>:10800): GdkPixbuf-WARNING **: Bug! loader 'png' didn't set an error on failure
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  2. #2

    Default Re: QT 4.7: GdkPixbuf-WARNING **: Bug! loader 'png' didn't set an error on failure

    From what I understand, there is a mismatch between the Qt libs and the pnglib on your machine. Looks like pnglib got updated by something and QT is now out of date.

    Anyone have any ideas on when the next Qt build will happen?

    My png version is: libpng-2:1.2.44-1.fc13(x86_64)

    I have a devel version with the exact same version # on it.

  3. #3
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    Default Re: QT 4.7: GdkPixbuf-WARNING **: Bug! loader 'png' didn't set an error on failure

    I had similar errors during execution of an application inside QtCreator - custom icon theme for gnome caused problem - after switching it to default / standard ones everything's fine.

  4. #4
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    Default Re: QT 4.7: GdkPixbuf-WARNING **: Bug! loader 'png' didn't set an error on failure

    Hi,
    sorry to writing to topic one month old, but i had this problem too and found a solution, so I think it will be handy for someone:

    Just run as root:

    update-mime /usr/share/mime/
    update-mime-database /usr/share/mime/
    gtk-update-icon-cache /usr/share/icons/YourTheme

    Logout/Login and it will be all right now :-)

  5. The following 2 users say thank you to nowrep for this useful post:

    mckelvin (18th July 2011), Oleg (16th September 2011)

  6. #5
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    Default Re: QT 4.7: GdkPixbuf-WARNING **: Bug! loader 'png' didn't set an error on failure

    Thanks a lot!it works!

    in my occasion it's
    Qt Code:
    1. sudo update-mime /usr/share/mime/
    2. sudo update-mime-database /usr/share/mime/
    3. sudo gtk-update-icon-cache /home/kelvin/.icons/Faenza
    To copy to clipboard, switch view to plain text mode 


    Quote Originally Posted by nowrep View Post
    Hi,
    sorry to writing to topic one month old, but i had this problem too and found a solution, so I think it will be handy for someone:

    Just run as root:

    update-mime /usr/share/mime/
    update-mime-database /usr/share/mime/
    gtk-update-icon-cache /usr/share/icons/YourTheme

    Logout/Login and it will be all right now :-)

  7. #6
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    Default Re: QT 4.7: GdkPixbuf-WARNING **: Bug! loader 'png' didn't set an error on failure

    Hi I'm new to this forum. I've just tried the above and I'm getting the following error under Linux Mint. Any idea what I'm doing wrong?

    $ sudo update-mime-database /usr/share/mime/
    Unknown media type in type 'all/all'
    Unknown media type in type 'all/allfiles'
    Unknown media type in type 'uri/mms'
    Unknown media type in type 'uri/mmst'
    Unknown media type in type 'uri/mmsu'
    Unknown media type in type 'uri/pnm'
    Unknown media type in type 'uri/rtspt'
    Unknown media type in type 'uri/rtspu'

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