Bug#825930: Marco crashes when switching windows with composition and thumbnails enabled

Raphaël Halimi raphael.halimi at gmail.com
Sun Jun 19 16:18:13 UTC 2016

Hi, sorry for the delay, your mail was caught by Gmail's spam filter.

Le 01/06/2016 à 13:19, Vlad Orlov a écrit :
> Hi, upstream MATE dev here.
> That crash was affecting only GTK+2 build of Marco. It was a
> regression in 1.14.0 and it was fixed in 1.14.1. GTK+3 version of
> Marco was fine from the beginning.
> Now Debian maintainers built the whole MATE Desktop Environment 1.14
> with GTK+3 for Unstable repo. This is a new thing for MATE in Debian
> - previous releases were built with GTK+2, which is also the default 
> build option upstream. There's a known limitation in GTK+, you can't
> use both GTK+ 2 and 3 in the same app, and that also applies to any
> shared libs that are used. Therefore, I suggest checking whether the
> whole MATE suite has been upgraded to version 1.14 on your system,
> because if it's not so, it might cause weird segfaults all over the
> place. :)

I just checked, all MATE packages are 1.14.0 or 1.14.1; marco is 1.14.2.
This was the case all along since MATE was upgraded from the previous
version in Sid.

The bug did disappear a week ago or so, but it's back as of today. I
really don't understand what causes it, since Marco wasn't updated

However, I must have been quite tired when I initially reported it
because I didn't think of reading ~/.xsession-errors. Indeed, every time
Marco crashes, there are these two error messages:

marco: ../../../../src/cairo-surface.c :953 : cairo_surface_destroy:
l'assertion « (_cairo_atomic_int_get (&(&surface->ref_count)->ref_count)
> 0) » a échoué.

Avertissement du gestionnaire de fenêtres : Log level 16:
g_object_set_valist: object class 'MetaFrames' has no property named 'type'

(in French, "a échoué" means "has failed", and "Avertissement du
gestionnaire de fenêtres" means "Warning from the window manager").

Hope it helps.


Raphaël Halimi

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