[Therion] loch segmentation fault at launch

[Bill Gee]

I did not pursue this during the holidays.  Now that Therion 6.3.3 is 
out, it is probably time to dig into it a bit deeper.

I downloaded Therion 6.3.3 from the git repository, compiled and 
installed it.  No errors, that all went very smoothly.

Loch still does not run in a Wayland session.  It gives a segmentation 
error and dumps core within about 2 seconds of launching.

I tried it on three different machines.  They all have the same basic 
configuration.  All three fail in the same way.

SCINU reports that Loch works in a Wayland session running on Debian 
Testing.  I am on Fedora 41.  Something is different, but I have no idea 
what it is.  Could it be a different version of xwayland?

A bit more information about my system:

bgee at main2:~$ rpm -qi xwaylandvideobridge
Name        : xwaylandvideobridge
Version     : 0.4.0
Release     : 7.fc41
Architecture: x86_64
Install Date: Fri Nov  8 07:08:53 2024
Group       : Unspecified
Size        : 214303
License     : (GPL-2.0-only or GPL-3.0-only) and LGPL-2.0-or-later and 
BSD-3-Clause
Signature   : RSA/SHA256, Thu Oct 31 05:14:12 2024, Key ID d0622462e99d6ad1
Source RPM  : xwaylandvideobridge-0.4.0-7.fc41.src.rpm
Build Date  : Wed Oct 30 15:46:50 2024
<snip>

bgee at main2:~$ inxi -G
Graphics:
   Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor Integrated 
Graphics
     driver: i915 v: kernel
   Device-2: Logitech Webcam C270 driver: snd-usb-audio,uvcvideo type: USB
   Display: wayland server: X.org v: 1.21.1.15 with: Xwayland v: 24.1.4
     compositor: kwin_wayland driver: X: loaded: modesetting unloaded: 
fbdev,vesa
     dri: crocus gpu: i915 resolution: 1920x1080
   API: EGL v: 1.5 drivers: crocus,swrast
     platforms: gbm,wayland,x11,surfaceless,device
   API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 24.2.8
     renderer: Mesa Intel HD Graphics 4600 (HSW GT2)
   API: Vulkan v: 1.3.296 drivers: N/A surfaces: xcb,xlib,wayland

This system is a Dell Optiplex.  The other two systems are a Dell laptop 
and a Lenovo laptop.  All are running Intel i915 displays.

===============
Bill Gee

On 11/25/24 15:09, Scinu via Therion wrote:
>> On Thu, Nov 21, 2024 at 2:14 PM Bill Gee <bgee at campercaver.net> wrote:
>>
>>> Confirmed - This problem has something to do with Wayland.  I logged
>>> into a test computer using X instead of Wayland.  Loch starts without
>>> error.  Logging out and back in with a Wayland session causes loch to fail.
>>
>> Hmm, no problem in the Wayland session with KDE on Debian Testing (and
>> no problem in the X session, either). Any other Wayland users here
>> that could report crashes or good operation?
> 
> With a fresh install from the AUR (archlinux user repository) loch
> starts without problems on both X and wayland (sway).
> 
> therion 6.3.1 (2024-11-22)
>    - using Proj 9.5.0, compiled against 9.5.0
> 
> loch 6.3.1
> (why is loch --version not implemented?)
> 
> If I can help test more, pls let me know
> 
> Best,
> 
> Scinu
> _______________________________________________
> Therion mailing list
> Therion at speleo.sk
> https://mailman.speleo.sk/listinfo/therion