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<p>Thanks Robby,</p>
<p>so my saga has started ...</p>
<p>I've installed apport-retrace and the ubuntu sources. The machine
has Mesa 25.2.3-1ubuntu1 installed.<br>
<br>
>apport-retrace --gdb --sandbox system --cache
~/.cache/apport-retrace /var/crash/_usr_bin_tellico.1000.crash<br>
</p>
<p>after several can't open file</p>
<p>Using host libthread_db library
"/lib/x86_64-linux-gnu/libthread_db.so.1".<br>
Core was generated by `/usr/bin/tellico'.<br>
Program terminated with signal SIGSEGV, Segmentation fault.<br>
#0 0x000075ac7d43216c in nv50_resource_from_memobj
(screen=0x63b2ad1a1c00, templ=0x7fffe4cd4ca0,
pmemobj=0x63b2ad85b2c8, offset=<optimized out>)<br>
at ../src/gallium/drivers/nouveau/nv50/nv50_resource.c:124<br>
aviso: 124 ../src/gallium/drivers/nouveau/nv50/nv50_resource.c:
No existe el archivo o el directorio<br>
[Current thread is 1 (Thread 0x75ac9e501180 (LWP 47593))]<br>
(gdb) <br>
</p>
<p><br>
</p>
<p>so it clearly related to the video drivers ...</p>
<p><br>
</p>
<p>the 124 row of nv50_resource.c (for Mesa 25.2.3) is</p>
<pre><span id="codeline-124"><span class="w"> </span><span
class="n"><a class="ident"
href="https://elixir.bootlin.com/mesa/mesa-25.2.3/C/ident/mt">mt</a></span><span
class="o">-></span><span class="n">base</span><span class="p">.</span><span
class="n"><a class="ident"
href="https://elixir.bootlin.com/mesa/mesa-25.2.3/C/ident/domain">domain</a></span><span
class="w"> </span><span class="o">=</span><span class="w"> </span><span
class="n"><a class="ident"
href="https://elixir.bootlin.com/mesa/mesa-25.2.3/C/ident/mt">mt</a></span><span
class="o">-></span><span class="n">base</span><span class="p">.</span><span
class="n"><a class="ident"
href="https://elixir.bootlin.com/mesa/mesa-25.2.3/C/ident/bo">bo</a></span><span
class="o">-></span><span class="n">flags</span><span class="w"> </span><span
class="o">&</span><span class="w"> </span><span class="n"><a
class="ident"
href="https://elixir.bootlin.com/mesa/mesa-25.2.3/C/ident/NOUVEAU_BO_APER">NOUVEAU_BO_APER</a></span><span
class="p">;</span></span></pre>
<p><br>
</p>
<p>so I need to load more sources to see if is really this line and
trace the bug ... will see and I'll let you know.</p>
<p>I also get Inkscape crashing, deb package, but I changed to the
snap, which works.</p>
<p>All my other applications, Libreoffice, Zoom, Enpass, Ente Auth,
Thunderbird, Firefox, Oracle Virtualbox, Gimp, Ferdium, etc...
works nicelly.</p>
<p><br>
</p>
<p>Daniel</p>
<p><br>
</p>
<div class="moz-cite-prefix">El 10/1/26 a las 22:22, Robby
Stephenson escribió:<br>
</div>
<blockquote type="cite"
cite="mid:CACFDV66C2LR32muFYv-0R5rpHciAuZ_mxn10Fg2v83kJY2qn9g@mail.gmail.com">
<pre wrap="" class="moz-quote-pre">Hi Daniel,
On Sat, Jan 10, 2026 at 1:37 PM Daniel Calcoen <a class="moz-txt-link-rfc2396E" href="mailto:daniel.calcoen@gmail.com"><daniel.calcoen@gmail.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="" class="moz-quote-pre">after my last upgrades on Ubuntu 25.10 in my wife's machine (GNOME 49,
Wayland, Linux 6.17.0'8-generic on iMac14,2 i5-4670) my Tellico 4.1.3 is
crashing after starting.
My 1st guess is oriented towards QT6 and problem with video.
launchig from the console gives :
alejandra@iMac:/var/crash$ tellico
[14:01:52] WARNING GBM is not supported with the current configuration.
Fallback to Vulkan rendering in Chromium.
Violación de segmento (`core' generado)
</pre>
</blockquote>
<pre wrap="" class="moz-quote-pre">
Looking at Google responses for that error, I think you're correct
about possible graphics video issue, likely related to Tellico's
using of the QtWebEngine (embedded Chrome)
</pre>
<blockquote type="cite">
<pre wrap="" class="moz-quote-pre">I need some help/orientation on how could I debug the coredump (the basics).
Do I need to install Tellico sources and compile all in my machine?
Do I need to lauch the coredump via gdb ? plus something more ?
</pre>
</blockquote>
<pre wrap="" class="moz-quote-pre">
There's a Ubuntu-specifc page at
<a class="moz-txt-link-freetext" href="https://wiki.ubuntu.com/DebuggingProgramCrash">https://wiki.ubuntu.com/DebuggingProgramCrash</a> that may help. Tellico
should offer to generate the core dump for you, but if the crash is
early in the initialization , that won't work.
Robby
</pre>
</blockquote>
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