Bug 1385788

Summary:	Unhandled exception when using the "Capture screenshot" functionality
Product:	[Fedora] Fedora	Reporter:	Giulio 'juliuxpigface' <juliux.pigface>
Component:	gimagereader	Assignee:	Sandro Mani <manisandro>
Status:	CLOSED INSUFFICIENT_DATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	25	CC:	manisandro
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Hardware:	x86_64
OS:	Linux
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Last Closed:	2016-11-24 00:00:02 UTC	Type:	Bug
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Description Giulio 'juliuxpigface' 2016-10-17 17:01:43 UTC

Description of problem:
I'm testing "gimagereader-gtk-3.1.99-1.fc25.x86_64" on Fedora 25 Workstation (Wayland session). The "Capture screenshot" functionality seems broken, as it throw an unhandled exception when invoked.

This does not appear to be a regression, since the "3.1.91-1" is affected by the same bug.

Version-Release number of selected component (if applicable):
gimagereader-gtk-3.1.99-1.fc25.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Open gtkimagereader-gtk from the terminal emulator
2. On the left side of the GUI, click the appropriate button in order to take a screenshot.

Actual results:
1.  The GUI gets stuck
2. The following output is printed on the terminal emulator:

(gimagereader-gtk:5330): Gdk-CRITICAL **: gdk_pixbuf_get_from_surface: assertion 'width > 0 && height > 0' failed

(gimagereader-gtk:5330): GdkPixbuf-CRITICAL **: gdk_pixbuf_get_bits_per_sample: assertion 'GDK_IS_PIXBUF (pixbuf)' failed

(gimagereader-gtk:5330): GdkPixbuf-CRITICAL **: gdk_pixbuf_get_width: assertion 'GDK_IS_PIXBUF (pixbuf)' failed

(gimagereader-gtk:5330): GdkPixbuf-CRITICAL **: gdk_pixbuf_get_height: assertion 'GDK_IS_PIXBUF (pixbuf)' failed

(gimagereader-gtk:5330): GdkPixbuf-CRITICAL **: gdk_pixbuf_get_rowstride: assertion 'GDK_IS_PIXBUF (pixbuf)' failed

(gimagereader-gtk:5330): GdkPixbuf-CRITICAL **: gdk_pixbuf_get_has_alpha: assertion 'GDK_IS_PIXBUF (pixbuf)' failed

(gimagereader-gtk:5330): GdkPixbuf-CRITICAL **: gdk_pixbuf_get_pixels_with_length: assertion 'GDK_IS_PIXBUF (pixbuf)' failed

(gimagereader-gtk:5330): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(gimagereader-gtk:5330): glibmm-CRITICAL **: 
unhandled exception (type Glib::Error) in signal handler:
domain: gdk-pixbuf-error-quark
code  : 5
what  : Errore critico nel file di immagine PNG: Invalid IHDR data


Expected results:
1. Ideally, the software should capture the screenshot without issues.
2. Ideally, no exceptions should be thrown on the terminal emulator.

Additional info:
I'm testing with qemu-kvm

Comment 1 Sandro Mani 2016-10-17 17:03:25 UTC

Thanks for the bug report and for testing, I'll look into it.

Comment 2 Sandro Mani 2016-10-18 07:59:20 UTC

Does not happen on F26/Rawhide. Looks like an issue with wayland/gdk which results in corrupt PNG data being returned for the screen capture. I'll need to set up a F25 VM to test further.

Comment 3 Sandro Mani 2016-10-24 20:38:23 UTC

Unable to reproduce here. Can you provide a stack trace so that I can add some safeguards?

Comment 4 Sandro Mani 2016-11-24 00:00:02 UTC

Closing since no reply. Feel free to reopen if you can provide more info.