I can reproduce the segmentation fault but I have no hint how to solve
this issue.

It looks like the function pthread_mutex_lock() is called with an
invalid (NULL) mutex.  This happens deep inside libX11 called by Tk.
So my assumption was that Qt and Tk disagree on the ownership of a X11
resource.  However, I've no idea which resource.

Daniel

2013/9/15 Vlad Bogolin <vladbogo...@gmail.com>:
>
> Hi all,
>
> When closing the qt display manager sometimes a segfault occurs. I've seen
> that this occurs after the close function is called and gdb says the
> fallowing:
>
> Program received signal SIGSEGV, Segmentation fault.
> __GI___pthread_mutex_lock (mutex=0x0) at pthread_mutex_lock.c:50
> 50    pthread_mutex_lock.c: No such file or directory.
>
> Any hints on what might cause this or where to look?
>
> Thanks,
> Vlad
>
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