<div dir="ltr"><div>It looks like even though I still can't get it to dump a core, it's a maybe a QT5.2 fault? Specifically libqxcb.so (part of libqt5gui5). I'm compiling on 64-bit Ubuntu 14.0.4,4 LTS. I ran mythtv-setup through a remote X/SSH and then tested with a directly connected monitor. Everything woks fine. Apparently this is an issue for libqxcb.so when running through VNC.</div><div><br></div><div><div><br></div><div><div>khanh@tv:~/Desktop$ gdb mythtv-setup -c /tmp/core 2>&1 | tee /tmp/mythtv-backtrace.txt </div><div>GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1</div><div>Copyright (C) 2014 Free Software Foundation, Inc.</div><div>License GPLv3+: GNU GPL version 3 or later <<a href="http://gnu.org/licenses/gpl.html" target="_blank">http://gnu.org/licenses/gpl.html</a>></div><div>This is free software: you are free to change and redistribute it.</div><div>There is NO WARRANTY, to the extent permitted by law. Type "show copying"</div><div>and "show warranty" for details.</div><div>This GDB was configured as "x86_64-linux-gnu".</div><div>Type "show configuration" for configuration details.</div><div>For bug reporting instructions, please see:</div><div><<a href="http://www.gnu.org/software/gdb/bugs/" target="_blank">http://www.gnu.org/software/gdb/bugs/</a>>.</div><div>Find the GDB manual and other documentation resources online at:</div><div><<a href="http://www.gnu.org/software/gdb/documentation/" target="_blank">http://www.gnu.org/software/gdb/documentation/</a>>.</div><div>For help, type "help".</div><div>Type "apropos word" to search for commands related to "word"...</div><div>Reading symbols from mythtv-setup...done.</div><div>/tmp/core: No such file or directory.</div><div>(gdb) run</div><div>Starting program: /usr/local/bin/mythtv-setup </div><div>[Thread debugging using libthread_db enabled]</div><div>Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".</div><div>[New Thread 0x7fffdb5a9700 (LWP 1632)]</div><div><br></div><div>Program received signal SIGSEGV, Segmentation fault.</div><div>0x00007fffdd8aa7e2 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so</div><div>(gdb) </div></div><div><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, May 9, 2016 at 11:05 AM, Bill Meek <span dir="ltr"><<a href="mailto:keemllib@gmail.com" target="_blank">keemllib@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span>On 05/09/2016 09:51 AM, Khanh Tran wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I've cleared out all myth libraries from /usr/local/lib as well as<br>
/usr/local/include/mythtv. Mythtv-setup doesn't dump a core file so I<br>
don't get anything from gdb mythtv-setup -c ./core 2>&1 | tee<br>
mythtv-setup_backtrace.txt.<br>
<br>
I'd like to have something to add to the trac ticket other than a "me too"<br>
but don't know where to go from here. Mythfrontend on my (dedicated)<br>
backend also segfaults, so I can only guess it's some kind of X or graphics<br>
issue. Mythbackend runs just fine.<br>
</blockquote>
<br></span>
Good idea (about not doing a "me too".) I was just suggesting looking for<br>
a match before creating a new ticket.<br>
<br>
Make sure you've done the ulimit -c unlimited. Not having done that<br>
can prevent cores. Also, there may be other things that change the<br>
location of the cores.<br>
<br>
See the kernel.core_pattern = /tmp/core.%t.%u.%p.%e example. Look in<br>
/etc/sysctl.conf and/or /etc/sysctl.d/* for core related issues.<br>
<br>
I recall that Mythbuntu sets some of these things on-the-fly at boot<br>
time. Your distro may too. Try this to see your current settings:<br>
<br>
sysctl -a 2>&1 | grep kernel.core<div class="HOEnZb"><div class="h5"><br>
<br>
-- <br>
Bill<br>
_______________________________________________<br>
mythtv-users mailing list<br>
<a href="mailto:mythtv-users@mythtv.org" target="_blank">mythtv-users@mythtv.org</a><br>
<a href="http://lists.mythtv.org/mailman/listinfo/mythtv-users" target="_blank" rel="noreferrer">http://lists.mythtv.org/mailman/listinfo/mythtv-users</a><br>
<a href="http://wiki.mythtv.org/Mailing_List_etiquette" target="_blank" rel="noreferrer">http://wiki.mythtv.org/Mailing_List_etiquette</a><br>
MythTV Forums: <a href="https://forum.mythtv.org" target="_blank" rel="noreferrer">https://forum.mythtv.org</a><br>
</div></div></blockquote></div><br></div>