According to strace here, zenity --info --window-icon /usr/share/zenity/zenity.png
makes a successful call to open() on the supplied filename (/usr/share/zenity/zenity.png), but then also calls open() on -- and displays -- the standard "white i on a blue disc" icon from /usr/share/icons/Humanity/status/48/dialog-information.svg. Changing the supplied filename to one more similar to the file displayed above, e.g. to /usr/share/icons/Humanity/status/48/dialog-error.svg, makes no difference to this behaviour. Ubuntu 12.04.2 LTS zenity 3.4.0-0ubuntu4 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/998491 Title: window icon does not work with all dialogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zenity/+bug/998491/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs