gnome-software (6) g_assertion_message → g_assertion_message_expr → gdk_cairo_surface_paint_pixbuf → gdk_cairo_surface_create_from_pixbuf → gs_image_set_from_pixbuf_with_scale

[errors.ubuntu.com bug bridge]

The Ubuntu Error Tracker has been receiving reports about a problem regarding gnome-software. This problem was most recently seen with version 3.20.1+git20160617.1.0440874.ubuntu-xenial-0ubuntu1, the problem page at https://errors.ubuntu.com/problem/8ccbb86505354b6b332d86ef6f58655c1eaf325c contains more details.

[Sebastien Bacher (seb128)]

the bug seems to get quite some reports on e.u.c, also reported on fedora it seems, https://bugzilla.redhat.com/show_bug.cgi?id=1324190

[Robert Ancell (robert-ancell)]

Not showing up in the tracker anymore, will look there if it pops up again.

[Robert Ancell (robert-ancell)]

Ah, the tracker was just slow to load stats... it is there.

[Robert Ancell (robert-ancell)]

My guess is this might be being caused by our Ubuntu One dialog that is run from inside our plugin. That would fit Richard's guess that we are using cairo from the non-main thread (i.e. using the plugin thread).

The solution to that would be to backport the auth code into 3.20.

[Robert Ancell (robert-ancell)]

In saying that, it is occurring in 3.22, which uses the new auth code. There are significantly less reports though.

[Robert Ancell (robert-ancell)]

Bug 1717825 is about switching out our original dialog code for the GNOME Software one. This should resolve some threading issues.

[Jean-Baptiste Lallement (jibel)]

Fixed in bionic