how to debug a Tellico crash (core dump) ? on Ubuntu 25.10, GNOME Wayland

[Robby Stephenson]

Hi Daniel,

On Sat, Jan 10, 2026 at 1:37 PM Daniel Calcoen <daniel.calcoen at gmail.com> wrote:
> 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 at 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)

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)

> 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 ?

There's a Ubuntu-specifc page at
https://wiki.ubuntu.com/DebuggingProgramCrash 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